docs: add crates.io installation instructions

pkh v0.1.0 is published to crates.io, so cargo install pkh is now the primary installation path; building from source stays as the alternative. Drop the 'no distribution channel' notice.
ci: install build-essential in the publish job
2026-09-24 22:19:24 +02:00 · 2026-09-24 21:41:15 +02:00 · 2026-09-22 23:55:56 +02:00 · 2026-09-22 21:35:35 +02:00 · 2026-09-22 19:57:01 +02:00 · 2026-09-22 14:31:25 +02:00
34 changed files with 5920 additions and 669 deletions
@@ -3,6 +3,7 @@ name: CI
 on:
  push:
    branches: [ "main", "ci-test" ]
+    tags: [ "v*" ]
  pull_request:
    branches: [ "main" ]

@@ -121,3 +122,41 @@ jobs:
          name: snap
          path: ./*.snap
          if-no-files-found: error
+
+  publish:
+    # Publishes the crate to crates.io on a v* tag. Trusted publishing
+    # (OIDC) is GitHub-Actions-only, so authentication goes through a
+    # crates.io API token stored as the CARGO_REGISTRY_TOKEN secret,
+    # scoped to the pkh crate.
+    if: startsWith(github.ref, 'refs/tags/v')
+    needs: build
+    runs-on: ubuntu-latest
+    container:
+      image: ubuntu:26.04
+      options: --privileged --cap-add SYS_ADMIN --security-opt apparmor:unconfined
+    steps:
+    - name: Set up container image
+      run: |
+        apt-get update
+        apt-get install -y nodejs sudo curl wget ca-certificates build-essential
+    - uses: actions/checkout@v6
+    - uses: dtolnay/rust-toolchain@stable
+    - name: Install build dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y pkg-config libssl-dev libgpg-error-dev libgpgme-dev
+    - name: Check the tag matches the crate version
+      # cargo publish ships whatever version Cargo.toml declares,
+      # regardless of the tag: a mismatch must fail loudly instead of
+      # publishing the wrong version under the release tag.
+      run: |
+        crate_version="$(awk -F'"' '/^version =/{print $2; exit}' Cargo.toml)"
+        tag_version="${GITHUB_REF_NAME#v}"
+        if [ "$crate_version" != "$tag_version" ]; then
+          echo "tag $GITHUB_REF_NAME does not match crate version $crate_version" >&2
+          exit 1
+        fi
+    - name: Publish
+      run: cargo publish
+      env:
+        CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
@@ -1,2 +1,8 @@
-*.lock
 target
+
+# Local snapcraft builds
+.craft
+parts
+prim
+stage
+*.snap
@@ -48,6 +48,8 @@ Rules:
  - `prune`, `package_info` — remaining subcommand modules
  - `context` — build contexts: local, ssh, chroot/schroot, unshare
    (`src/context/`)
+  - `interrupt` — Ctrl+C interception and interrupt-time cleanup
+    (`src/interrupt.rs`)
  - `debian` — Debian format primitives: control, versions, checksums,
    arch (`src/debian/`)
  - `apt`, `launchpad`, `distro_info`, `quirks` — archive/distro
@@ -3,6 +3,10 @@ name = "pkh"
 version = "0.1.0"
 edition = "2024"
 authors = ["vhaudiquet"]
+description = "pkh is a packaging helper for Debian/Ubuntu packages"
+license = "MIT OR GPL-2.0-only"
+repository = "https://git.vhaudiquet.fr/vhaudiquet/pkh"
+readme = "README.md"

 [dependencies]
 clap = { version = "4.5.51", features = ["cargo"] }
@@ -35,6 +39,8 @@ gpgme = "0.11"
 serde_yaml = "0.9"
 lazy_static = "1.4.0"
 unicode-width = "0.2"
+parking_lot = "0.12"
+suppaftp = "12"

 [dev-dependencies]
 test-log = "0.2.19"
@@ -0,0 +1,338 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+
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+
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+
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+
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+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
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+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Moe Ghoul>, 1 April 1989
+  Moe Ghoul, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025-2026 Valentin Haudiquet
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -2,6 +2,30 @@

 `pkh` is a packaging helper for Debian/Ubuntu packages.

+![](.github/pkh.gif)
+
+## Installation
+
+From crates.io:
+
+```
+cargo install pkh
+```
+
+Or build from source (the same system packages are needed either way):
+
+```
+sudo apt install pkg-config libssl-dev libgpg-error-dev libgpgme-dev
+git clone https://git.vhaudiquet.fr/vhaudiquet/pkh.git
+cd pkh
+cargo install --path .
+```
+
+At runtime pkh shells out to the Debian packaging toolchain (git,
+dpkg-dev, quilt, mmdebstrap, lintian, pristine-tar, ...): install the
+ones your workflows use, or build the classic snap from
+`snap/snapcraft.yaml` (`snapcraft pack`), which carries them.
+
 ## Usage and features

 ### Basic concepts
@@ -25,12 +49,19 @@ Options:
 Commands and workflows include:
 ```
 Commands:
+  new    Scaffold a new Debian source package (buildable right away)
  pull   Pull a source package from the archive or git
  chlog  Auto-generate changelog entry, editing it, committing it afterwards
  build  Build the source package (into a .dsc)
-  deb    Build the source package into binary package (.deb)
  put    Upload the built source package to a PPA
+  deb    Build the source package into binary package (.deb)
+  lint   Lint the package (lintian wrapper + pkh-native checks)
+  prune  Prune residual pkh build artifacts and caches
  help   Print this message or the help of the given subcommand(s)
+
+Options:
+  -h, --help     Print help
+  -V, --version  Print version
 ```

 ### Examples
@@ -66,68 +97,25 @@ That is a lot of different tools and operations. With pkh, the same workflow:
 pkh pull hello # needs -d ubuntu if you are not running Ubuntu
 # Apply the patch to the package
 ...
-pkh commit -m "Applied patch xxx"
+git add debian/patches/xxx.patch
+git commit -m "Applied patch xxx"
 pkh chlog
+git add debian/changelog
+git commit -m "d/changelog"
 # Test that the package builds
 pkh build
 pkh deb
 # Upload the package to a ppa
 pkh put --ppa user/hello_xxx
-# Push previously commited changes
+# Push the commits to your fork
 git push xxx user-fork
 ```

-## Roadmap: features needed for 1.0
-
-Basically, wrapping the basic debian workflows.
-Missing features:
- [ ] `pkh pull`
-  - [x] Obtain package sources from git
-  - [x] Obtain package sources from the archive (fallback)
-  - [x] Obtain package source from PPA (--ppa)
-  - [ ] Obtain a specific version of the package
-  - [x] Fetch the correct git branch for series on Ubuntu
-  - [ ] Try to fetch the correct git branch for series on Debian, or fallback to the archive
- [ ] `pkh chlog`
-  - [x] Auto-generate changelog entry
-  - [x] Extra flags: backport, non-maintainer upload, no change rebuild, ...
-  - [ ] Commit changelog entry
- [ ] `pkh build`
-  - [x] Build the source package
- [ ] `pkh deb`
-  - [x] Build the binary package
-  - [x] Build for a specific architecture
-  - [ ] Three build modes:
-    - [ ] Build locally (discouraged)
-    - [x] Build using unshare chroot, with binary emulation (default)
-    - [x] Cross-compilation
-  - [ ] Async build
- [ ] `pkh status`
-  - [ ] Show build status
- [ ] `pkh put`
-  - [x] Upload the source package to a PPA (native SFTP, no `dput` dependency)
-  - [ ] Upload the source package to the archive
- [ ] `pkh commit`
-  - [ ] Commit the changes to git
- [ ] `pkh lint`
-  - [ ] Lint the package
- [ ] `pkh test`
-  - [ ] Run autopkgtest
-  - [ ] Provide options: local (discouraged), chroot, VM?, ppa
-  - [ ] Async test
-
-## Nice-to-have features
-
- [ ] 'pkh pull'
-  - [ ] Cache the Sources.gz files, to improve speed
-  - [ ] Work in an already downloaded package, to git pull and re-fetch orig tar gz
- [ ] 'pkh context'
-  - [x] Select, add, remove, list contexts
-  - [x] Context-scoped command execution
-  - [ ] Context-scoped deb and test commands
-  - [ ] Per-architecture contexts
-  - [ ] Per-series contexts
-  - [x] ssh contexts
-  - [ ] docker, lxc contexts?
-  - [ ] context push, context pop: context stack
+## Future improvement ideas

+- pull: try to fetch the correct git branch for series on Debian
+- deb: asynchronous build, detachable and monitorable
+- put: allow uploads to Debian or Ubuntu archives
+- test: add 'pkh test' to run autopkgtests
+- pull: cache Sources.gz files to improve speed
+- pull: 'pkh pull' in a package tree should git pull and re-fetch orig tgz
@@ -28,6 +28,12 @@
 ##                   series (`<series>-updates`, ...). Deliberately not the
 ##                   `pockets` key: that one is the *search order* of pull,
 ##                   where backports must not fold in.
+##   suite_aliases:  the changelog suite names that alias a series
+##                   codename: Debian packages conventionally target
+##                   'unstable' where the series data carries 'sid'.
+##                   Mapped suite name -> series codename; the two
+##                   names identify the same series, and the selector
+##                   offers the aliased entry as '<suite> (<series>)'.
 ##   build_profiles: the vendor's default DEB_BUILD_PROFILES (Ubuntu
 ##                   activates derivative.ubuntu noudeb, Debian none),
 ##                   mirroring what Dpkg::BuildProfiles resolves when the
@@ -47,6 +53,10 @@ dist:
      - updates
      - security
      - proposed-updates
+    # Debian changelogs conventionally target 'unstable'; the series data
+    # knows the same series as 'sid'.
+    suite_aliases:
+      unstable: sid
    sections:
      # Valid Section values for debian/control: the Debian policy section
      # list unioned with the sections observed in the live Ubuntu archive.
@@ -13,6 +13,9 @@
 ##   ssh_*:        the PPA upload queue, as expanded by dput-ng's
 ##                 ppa:user/ppa profile (ppa.launchpad.net:22, incoming
 ##                 ~<user>/<ppa>)
+##   ftp_*:        the same upload queue over anonymous FTP, dput-ng's
+##                 plain ppa: profile: the transport pkh degrades to
+##                 when the SSH connection itself never comes up
 ##   content_host_template: ppa.launchpadcontent.net serves PPA apt
 ##                 repositories since the 2022 move off ppa.launchpad.net
 ##   git_web_template: Launchpad's CGit mirrors of Ubuntu source packages
@@ -21,6 +24,10 @@
 api_base: https://api.launchpad.net/1.0
 ssh_host: ppa.launchpad.net
 ssh_port: 22
+## The anonymous FTP upload queue dput-ng's plain ppa: profile uses:
+## pkh degrades to it when the SSH connection itself never comes up.
+ftp_host: ppa.launchpad.net
+ftp_port: 21
 incoming_template: "~{owner}/{ppa}"
 content_host_template: https://ppa.launchpadcontent.net/{owner}/{ppa}/ubuntu
 git_web_template: https://git.launchpad.net/ubuntu/+source/{package}
@@ -0,0 +1,130 @@
+---
+name: pkh
+description: 'Drive pkh, a Debian/Ubuntu packaging helper: pull source packages, generate changelog entries, build .dsc/.deb, lint, and upload to a PPA. Use it whenever the task touches Debian or Ubuntu packaging: patching an existing package, preparing an SRU, backport or NMU, scaffolding a new .deb, rebuilding for a PPA, or uploading a source package. Trigger on "update the changelog", "package this", or a bare package name, even when the user never mentions Debian.'
+---
+
+# pkh
+
+`pkh` wraps the Debian packaging toolchain (`dch`, `dpkg-buildpackage`,
+`sbuild`, `dpkg-source`, `quilt`, `lintian`, PPA uploads) in one CLI.
+The subcommands share one set of option names, so `-s` always targets
+the series and `--ppa` always names the PPA. Each step also does more
+than the raw tool it replaces: `pull` fetches the orig tarball with the
+source, `chlog` commits the entry it writes, `deb` sets up a chroot and
+installs the build dependencies.
+
+Check the install with `pkh --version`. Each command lists its flags
+with `pkh <command> --help`, so check there instead of guessing. pkh
+shells out to host tools (git, dpkg-dev, quilt, mmdebstrap, lintian,
+pristine-tar, schroot, ...). Install the ones your workflow uses, or
+use the classic snap, which carries them.
+
+## Shared options
+
+| Option | Meaning |
+|---|---|
+| `-d, --dist <dist>` | Target distribution, `debian` or `ubuntu` |
+| `-s, --series <series>` | Target series, for example `resolute` or `noble` |
+| `-v, --version <version>` | Target package version |
+| `-a, --arch <arch>` | Target architecture, for example `amd64` or `riscv64` |
+| `-p, --pocket <pocket>` | Distribution pocket: `updates`, `security`, `proposed` |
+| `--ppa <user/ppa>` | Act on the named PPA |
+
+Defaults come from the host vendor, its development series, and its
+architecture. When the target differs, pass the flags: packaging for
+Ubuntu on a Debian host needs `-d ubuntu`, and a series or architecture
+that differs from the host needs `-s` or `-a`.
+
+## Patch an Ubuntu package
+
+```
+pkh pull hello                     # source and orig tarball; add -d ubuntu off an Ubuntu host
+# edit the package, committing each patch to git
+pkh chlog                          # generates the entry, opens it for editing, commits it
+git add debian/changelog && git commit -m "d/changelog"
+pkh build                          # source package, written next to the tree
+pkh deb                            # binary build in a chroot with build deps installed
+pkh lint                           # lintian plus pkh-native checks
+pkh put --ppa user/hello_xxx       # uploads the .changes file from the build
+git push xxx user-fork             # push the branch to your fork
+```
+
+Run `pkh chlog` and `pkh build` from the root of the source tree; they
+act on the package in the current directory.
+
+## Command reference
+
+- `pkh new [name]` scaffolds a buildable source package. `--lang`
+  picks the build system (`rust`, `python`, `meson`, `cmake`,
+  `autotools`, `go`, `shell`, `makefile`); `--source <PATH>` packages
+  existing sources instead. `--upstream-version` and `--revision` set
+  the version. `--description`, `--homepage`, `--license <SPDX>`,
+  `--command`, `--maintainer "Name <email>"`, and `--depends` fill in
+  the package metadata, with the maintainer defaulting to
+  `DEBFULLNAME`/`DEBEMAIL` and then git config. `--quilt` and
+  `--native` choose the source format; `--orig-from
+  release|git|path|snapshot` and `--orig-path` control the orig
+  tarball. The changelog starts as `UNRELEASED`; `--release` targets
+  `--series` instead. `--defaults` answers every remaining question
+  with its default, which keeps the run non-interactive.
+
+- `pkh pull <package>` fetches a source package from the archive or
+  git. `--archive` skips git. `--ppa user/ppa` and `--repository
+  <suite-url>` pull from a PPA or an external flat repository instead.
+  `-d`, `-s`, `-v`, and `-p` target an exact source.
+
+- `pkh chlog` generates the changelog entry from the commits since the
+  last version tag, opens it for editing, and commits it. `--backport`,
+  `--nmu`, and `--rebuild` apply the matching numbering scheme
+  (`3.1-1ubuntu2~24.04.1`, `1.0-1.1`, `1.0-1build1`); `-v` sets an
+  explicit version instead.
+
+- `pkh build` produces the .dsc. `--orig auto|always|never` controls
+  whether the upload includes the orig tarball; the default, `auto`,
+  includes it only when the upstream version changed.
+
+- `pkh deb` builds the binary packages in an isolated context with the
+  build dependencies installed. `--ppa` (repeatable) adds dependency
+  sources, `--inject <package|.deb>` preinstalls a package, and `-j`
+  caps parallel jobs. `--cross` cross-compiles instead of using
+  qemu-binfmt, but most packages cannot cross-compile, so prefer qemu.
+  Leave `--mode` unset unless you need a specific build context.
+
+- `pkh lint [path]` runs lintian plus the pkh-native checks. `--json`
+  emits a machine-readable report and `--list-tags` prints the native
+  tag catalog. `--fail-on` sets the severities that fail the run
+  (errors by default), `--suppress-tags` ignores tags, `--check` runs a
+  single native check, and `--info`, `--pedantic`, and
+  `--experimental` add detail. `--repack` packs the tree fresh instead
+  of reusing the existing build output.
+
+- `pkh put [changes]` uploads a .changes file to `--ppa user/ppa`.
+  With no argument it uploads the .changes from this package's last
+  build, found next to the source tree. `--force` re-uploads a file
+  that was already uploaded.
+
+- `pkh prune` removes build artifacts and caches. Run it with
+  `--dry-run` first to list them. `--all` also deletes the cached
+  chroot tarballs, which take long to download again, so use it when
+  you need the disk space.
+
+## Notes for agent runs
+
+- Pass `-d`, `-s`, and `-a` whenever the target differs from the host,
+  so runs are reproducible.
+- Keep runs non-interactive. Pass explicit flags, use `pkh new
+  --defaults`, and set `EDITOR` before `pkh chlog` (`EDITOR=true` keeps
+  the generated text). Commands may ask short questions on the
+  terminal; flags avoid most prompts.
+- Pass `RUST_LOG=debug` for pkh's own logs. `--verbose` on `pkh build`
+  and `pkh deb` prints raw tool output instead of the live view.
+- pkh writes the build artifacts (.dsc, .changes, logs) next to the
+  source tree. `pkh put` finds them without arguments, and `pkh prune`
+  removes them again.
+- Run `pkh lint` before `pkh put`. It exits nonzero when findings reach
+  the `--fail-on` level, which defaults to errors.
+- pkh intercepts Ctrl+C, runs its cleanup hooks, and exits with status
+  130. `pkh prune` removes anything left over.
+
+The upstream repository is https://git.vhaudiquet.fr/vhaudiquet/pkh.
+Its README has longer workflow examples.
@@ -2,12 +2,17 @@ name: pkh
 base: core24
 summary: pkh is a packaging helper for Debian/Ubuntu packages
 description: |
-  pkh aims at wrapping the different debian tools and workflows 
-  into one tool, that would have the same interface for everything, 
+  pkh aims at wrapping the different debian tools and workflows
+  into one tool, that would have the same interface for everything,
  while being smarter at integrating all workflows.
+
+  This snap uses classic confinement and carries the packaging
+  toolchain it drives (dpkg-dev, git, mmdebstrap, lintian, quilt, ...)
+  so it behaves the same on any Debian/Ubuntu host.
+license: MIT OR GPL-2.0-only
 adopt-info: pkh-part

-confinement: devmode
+confinement: classic

 apps:
    pkh:
@@ -19,24 +24,92 @@ parts:
    source: .
    override-pull: |
      craftctl default
-      craftctl set version=$(git rev-parse --short=11 HEAD)
-      craftctl set grade="devel"
+      # Release metadata comes from the crate, not the git state: a build
+      # of any commit must produce the version the crate declares.
+      craftctl set version="$(awk -F'"' '/^version =/{print $2; exit}' Cargo.toml)"
+      craftctl set grade="stable"
    build-packages:
      - build-essential
+      - file
+      - patchelf
      - pkg-config
      - libssl-dev
      - libgpg-error-dev
      - libgpgme-dev
+    # Host-side tools pkh execs directly. Tools that only run *inside*
+    # the build chroot (dose-builddebcheck, dpkg-cross) are provisioned
+    # there by pkh itself and must not be staged; likewise qemu-user-static
+    # is host binfmt configuration, not a bundled file.
+    #
+    # The apt and dpkg state-owning tools are deliberately excluded below:
+    # they must be the host's (classic mode makes them visible), since a
+    # core24 apt/dpkg managing a newer host's package database is exactly
+    # the version skew classic snaps must avoid. The source-package tools
+    # (dpkg-buildpackage, dpkg-source, ...) are bundled instead.
    stage-packages:
      - libgpgme11t64
      - git
      - curl
+      - gnupg
+      - gpgv
+      - dpkg-dev
+      - quilt
      - pristine-tar
      - mmdebstrap
+      - lintian
+      - fakeroot
      - util-linux
-      - dpkg-dev
+      # mount/umount moved to their own package (split from util-linux)
+      - mount
+      - schroot
+      - openssh-client
+      - tar
+      - xz-utils
+      - bzip2
    stage:
-    - -usr/lib/x86_64-linux-gnu/libicuio.so.74.2
-    - -usr/lib/x86_64-linux-gnu/libicutest.so.74.2
-    - -usr/lib/x86_64-linux-gnu/libicutu.so.74.2
-    - -usr/lib/x86_64-linux-gnu/libicui18n.so.74.2
+    - -usr/bin/apt
+    - -usr/bin/apt-cache
+    - -usr/bin/apt-cdrom
+    - -usr/bin/apt-config
+    - -usr/bin/apt-get
+    - -usr/bin/apt-key
+    - -usr/bin/apt-mark
+    - -usr/lib/*/libapt-*
+    - -usr/lib/*/libicuio*
+    - -usr/lib/*/libicutest*
+    - -usr/lib/*/libicutu*
+    - -usr/lib/*/libicui18n*
+    # update-alternatives does not run at staging time: expose the sysv
+    # fakeroot under the plain name dpkg-buildpackage and pkh exec.
+    override-prime: |
+      craftctl default
+      ln -sfn fakeroot-sysv "${CRAFT_PRIME}/usr/bin/fakeroot"
+      # Ship the license texts with the binary: the MIT grant requires
+      # the notice to accompany copies, and GPL-2 requires the license
+      # text alongside distribution.
+      mkdir -p "${CRAFT_PRIME}/usr/share/doc/pkh"
+      cp "${CRAFT_PART_SRC}/LICENSE-MIT" "${CRAFT_PART_SRC}/LICENSE-GPL" \
+        "${CRAFT_PRIME}/usr/share/doc/pkh/"
+      # Classic-confined ELFs default to the host loader, which pins the
+      # snap to hosts shipping at least the build environment's glibc,
+      # and cannot see the libraries deduplicated against the base.
+      # Point every bundled ELF at the core24 loader and give it an
+      # rpath resolving base libraries from the mounted base and
+      # snap-local libraries from $ORIGIN — the classic linter's
+      # guidance, and what Canonical's own classic snaps do. DT_RPATH
+      # (--force-rpath) is required over the default DT_RUNPATH: the
+      # host ld.so.cache would otherwise resolve sonames to host
+      # libraries first, mixing host libm/libresolv with base libc.
+      # DT_RPATH also propagates transitively, covering dependencies of
+      # dependencies (libgpgme -> libassuan). Host tools spawned later
+      # (host apt-get, ...) run with a pristine environment since no
+      # LD_LIBRARY_PATH is exported.
+      find "${CRAFT_PRIME}" -type f -exec sh -c '
+        for f do
+          [ "$(od -An -N4 -tx1 "$f" | tr -d " \n")" = "7f454c46" ] || continue
+          patchelf --set-interpreter \
+            /snap/core24/current/lib64/ld-linux-x86-64.so.2 "$f" 2>/dev/null || true
+          patchelf --force-rpath --set-rpath \
+            "/snap/core24/current/lib/x86_64-linux-gnu:/snap/core24/current/usr/lib/x86_64-linux-gnu:\$ORIGIN:\$ORIGIN/../lib/x86_64-linux-gnu:\$ORIGIN/../usr/lib/x86_64-linux-gnu" \
+            "$f" 2>/dev/null || true
+        done' sh {} +
@@ -137,7 +137,9 @@ pub async fn generate_entry(
 enum Bump {
    /// Regular upload: increment the trailing number
    Normal,
-    /// Ubuntu upload: `1.0-9` becomes `1.0-9ubuntu1`
+    /// Ubuntu upload: `1.0-9` becomes `1.0-9ubuntu1`; a trailing
+    /// no-change-rebuild marker is dropped first (`1.0-9build1` becomes
+    /// `1.0-9ubuntu1`)
    Ubuntu,
    /// Non-maintainer upload: `1.0-1` becomes `1.0-1.1`, native `1.0`
    /// becomes `1.0+nmu1`
@@ -158,7 +160,7 @@ fn compute_new_version(
    bump: Bump,
 ) -> Result<String, Box<dyn std::error::Error>> {
    match bump {
-        Bump::Ubuntu => increment_suffix(old_version, "ubuntu"),
+        Bump::Ubuntu => increment_suffix(strip_build_suffix(old_version), "ubuntu"),
        Bump::Rebuild => increment_suffix(old_version, "build"),
        Bump::Nmu => {
            if old_version.contains('-') {
@@ -177,6 +179,19 @@ fn compute_new_version(
    }
 }

+/// The version an Ubuntu upload is numbered from: a trailing
+/// no-change-rebuild marker is dropped, because a real change on top of a
+/// rebuild replaces the marker rather than appending to it — `X-2build1`
+/// becomes `X-2ubuntu1`, where an appended `X-2build1ubuntu1` would
+/// misrepresent the lineage and sort below `X-2ubuntu1`
+fn strip_build_suffix(version: &str) -> &str {
+    let stem = version.trim_end_matches(|c: char| c.is_ascii_digit());
+    match stem.strip_suffix("build") {
+        Some(base) if stem.len() < version.len() => &version[..base.len()],
+        _ => version,
+    }
+}
+
 /// The version bump a regular ([`EntryKind::Normal`]) upload gets, derived
 /// from the vendor of the target series: Ubuntu series number their uploads
 /// the Ubuntu way (`1.0-1` becomes `1.0-1ubuntu1`), everything else —
@@ -294,9 +309,16 @@ pub enum SeriesCandidates {
    /// cannot be made (cancelled, no interactive user) `fallback` — the
    /// changelog's current series — is used instead.
    Choose {
-        /// Series names to offer.
+        /// Selector labels: each series name, or `<suite> (<series>)`
+        /// for a series aliased by a changelog suite name (Debian's
+        /// 'unstable (sid)').
        options: Vec<String>,
-        /// Preselected series.
+        /// Changelog distribution each label of `options` maps to,
+        /// parallel to it: an aliased label selects its suite name —
+        /// what a changelog distribution field expects — while every
+        /// other label selects itself.
+        values: Vec<String>,
+        /// Preselected label.
        default: String,
        /// Series to fall back to when nothing can be selected.
        fallback: String,
@@ -312,8 +334,10 @@ pub enum SeriesCandidates {
 /// An UNRELEASED entry offers itself as a pinned first option (selecting it
 /// keeps the changelog unreleased) on top of the current vendor's series
 /// list, defaulting to the development series; any other series resolves
-/// through the series list of its own distribution. `None` when the
-/// changelog cannot be parsed (no default to derive at all).
+/// through the series list of its own distribution. A changelog suite name
+/// (Debian's 'unstable') identifies the same series as its alias's codename
+/// ('sid') and resolves to that dist's list. `None` when the changelog
+/// cannot be parsed (no default to derive at all).
 pub async fn series_candidates(changelog_path: &Path) -> Option<SeriesCandidates> {
    let (_package, _version, current) = parse_changelog_header(changelog_path).ok()?;

@@ -321,10 +345,13 @@ pub async fn series_candidates(changelog_path: &Path) -> Option<SeriesCandidates
        // Vendors keep original casing ("Ubuntu"), while the series data
        // keys are lowercase
        let dist = crate::build::env::current_vendor().to_lowercase();
-        let mut options = vec![crate::distro_info::UNRELEASED.to_string()];
        match crate::distro_info::get_ordered_series_name(&dist).await {
            Ok(series_list) => {
-                options.extend(series_list);
+                let (labels, series_values, _) = selector_options(&dist, &series_list, "");
+                let mut options = vec![crate::distro_info::UNRELEASED.to_string()];
+                let mut values = vec![crate::distro_info::UNRELEASED.to_string()];
+                options.extend(labels);
+                values.extend(series_values);
                // Default to the development series (the first real entry),
                // not to the pinned UNRELEASED entry itself
                let default = if options.len() > 1 {
@@ -334,6 +361,7 @@ pub async fn series_candidates(changelog_path: &Path) -> Option<SeriesCandidates
                };
                Some(SeriesCandidates::Choose {
                    options,
+                    values,
                    default,
                    fallback: current,
                })
@@ -341,22 +369,81 @@ pub async fn series_candidates(changelog_path: &Path) -> Option<SeriesCandidates
            Err(_) => Some(SeriesCandidates::Keep(current)),
        }
    } else {
-        match crate::distro_info::get_dist_from_series(&current).await {
-            Ok(dist) => match crate::distro_info::get_ordered_series_name(&dist).await {
-                // Even an empty list goes through the selector: its
-                // fallback prints and takes the default, like it always has
-                Ok(options) => Some(SeriesCandidates::Choose {
-                    options,
-                    default: current.clone(),
-                    fallback: current,
-                }),
-                Err(_) => Some(SeriesCandidates::Keep(current)),
-            },
-            Err(_) => Some(SeriesCandidates::Keep(current)),
+        // The changelog may target a suite name instead of a series
+        // codename: Debian conventionally writes 'unstable' where the
+        // series data carries 'sid'. The two identify the same series:
+        // the alias resolves to its codename's dist for the lookup.
+        let resolved = match crate::distro_info::get_dist_from_series(&current).await {
+            Ok(dist) => Some((dist, current.clone())),
+            Err(_) => crate::distro_info::resolve_suite_alias(&current),
+        };
+        match resolved {
+            Some((dist, canonical)) => {
+                match crate::distro_info::get_ordered_series_name(&dist).await {
+                    // Even an empty list goes through the selector: its
+                    // fallback prints and takes the default, like it always has
+                    Ok(series_list) => {
+                        let (options, values, default) =
+                            selector_options(&dist, &series_list, &canonical);
+                        Some(SeriesCandidates::Choose {
+                            options,
+                            values,
+                            // A stale alias whose codename left the series
+                            // list offers the raw name instead
+                            default: default.unwrap_or_else(|| canonical.clone()),
+                            fallback: current,
+                        })
+                    }
+                    Err(_) => Some(SeriesCandidates::Keep(current)),
+                }
+            }
+            None => Some(SeriesCandidates::Keep(current)),
        }
    }
 }

+/// The selector entries for a dist's series list: (labels, changelog
+/// targets, label of `current`'s entry). A series aliased by a
+/// changelog suite name (Debian's 'unstable' for 'sid') is offered as
+/// `<suite> (<series>)` but targets the suite name — what a changelog
+/// distribution field expects — while every other series is offered,
+/// and targeted, under its own name. `current` may be a name that is
+/// not in the list at all (e.g. UNRELEASED), in which case no default
+/// is returned.
+fn selector_options(
+    dist: &str,
+    series: &[String],
+    current: &str,
+) -> (Vec<String>, Vec<String>, Option<String>) {
+    let mut labels = Vec::with_capacity(series.len());
+    let mut values = Vec::with_capacity(series.len());
+    let mut default = None;
+    for s in series {
+        let (label, value) = match crate::distro_info::series_suite_alias(dist, s) {
+            Some(suite) => (format!("{suite} ({s})"), suite),
+            None => (s.clone(), s.clone()),
+        };
+        if s == current {
+            default = Some(label.clone());
+        }
+        labels.push(label);
+        values.push(value);
+    }
+    (labels, values, default)
+}
+
+/// The changelog distribution a selected series-selector label maps to
+/// ([`SeriesCandidates::Choose`]): an aliased entry ('unstable (sid)')
+/// targets its suite name, any other label targets itself, and a
+/// free-typed series the selector does not offer is its own target.
+pub fn selected_series(options: &[String], values: &[String], selected: String) -> String {
+    options
+        .iter()
+        .position(|o| *o == selected)
+        .and_then(|idx| values.get(idx).cloned())
+        .unwrap_or(selected)
+}
+
 /// Parse a changelog file footer to extract maintainer information
 /// Returns (name, email) tuple from the last modification entry
 pub fn parse_changelog_footer(path: &Path) -> Result<(String, String), Box<dyn std::error::Error>> {
@@ -639,12 +726,18 @@ mod tests {
        match series_candidates(&path).await {
            Some(SeriesCandidates::Choose {
                options,
+                values,
                default,
                fallback,
            }) => {
                assert_eq!(options[0], "UNRELEASED");
+                assert_eq!(values[0], "UNRELEASED");
                assert!(options.len() > 1, "the vendor series list is offered");
                assert_eq!(default, options[1]);
+                assert_eq!(
+                    selected_series(&options, &values, default.clone()),
+                    values[1]
+                );
                assert_eq!(fallback, "UNRELEASED");
            }
            other => panic!("expected Choose, got {other:?}"),
@@ -677,17 +770,105 @@ mod tests {
        match series_candidates(&path).await {
            Some(SeriesCandidates::Choose {
                options,
+                values,
                default,
                fallback,
            }) => {
-                assert_eq!(options, vendor_series);
-                assert_eq!(default, *current);
+                // The current series is preselected through its label, and
+                // selecting it targets the name the changelog already carries
+                let idx = values
+                    .iter()
+                    .position(|v| v == current)
+                    .expect("the current series is offered");
+                assert_eq!(default, options[idx]);
+                assert_eq!(
+                    selected_series(&options, &values, options[idx].clone()),
+                    *current
+                );
                assert_eq!(fallback, *current);
            }
            other => panic!("expected Choose, got {other:?}"),
        }
    }

+    /// A changelog targeting Debian's 'unstable' suite — the conventional
+    /// Debian development distribution, which the series data knows as the
+    /// codename 'sid' — resolves to the Debian series list: the selector
+    /// offers the aliased entry as 'unstable (sid)', preselected, and
+    /// selecting it targets 'unstable' itself.
+    #[tokio::test]
+    async fn series_candidates_suite_alias_matches_unstable_and_sid() {
+        let dir = tempfile::tempdir().unwrap();
+        let path = dir.path().join("changelog");
+        std::fs::write(
+            &path,
+            "hello (1.0-1) unstable; urgency=medium\n\n  * Something.\n\n \
+             -- A B <a@b.c>  Mon, 01 Jan 2024 00:00:00 +0000\n",
+        )
+        .unwrap();
+
+        match series_candidates(&path).await {
+            Some(SeriesCandidates::Choose {
+                options,
+                values,
+                default,
+                fallback,
+            }) => {
+                let idx = options
+                    .iter()
+                    .position(|o| o == "unstable (sid)")
+                    .expect("sid is offered as its suite alias");
+                assert_eq!(values[idx], "unstable");
+                assert_eq!(default, "unstable (sid)");
+                assert_eq!(fallback, "unstable");
+                // Selecting the aliased entry targets the suite name
+                assert_eq!(
+                    selected_series(&options, &values, options[idx].clone()),
+                    "unstable"
+                );
+                // A free-typed series the selector does not offer is its own
+                // target
+                assert_eq!(
+                    selected_series(&options, &values, "trixie".to_string()),
+                    "trixie"
+                );
+            }
+            other => panic!("expected Choose, got {other:?}"),
+        }
+    }
+
+    /// A changelog naming the codename ('sid') resolves to the same
+    /// selector entry as the suite alias ('unstable'): the two identify
+    /// the same series.
+    #[tokio::test]
+    async fn series_candidates_sid_defaults_to_the_suite_alias_label() {
+        let dir = tempfile::tempdir().unwrap();
+        let path = dir.path().join("changelog");
+        std::fs::write(
+            &path,
+            "hello (1.0-1) sid; urgency=medium\n\n  * Something.\n\n \
+             -- A B <a@b.c>  Mon, 01 Jan 2024 00:00:00 +0000\n",
+        )
+        .unwrap();
+
+        match series_candidates(&path).await {
+            Some(SeriesCandidates::Choose {
+                options,
+                values,
+                default,
+                fallback,
+            }) => {
+                assert_eq!(default, "unstable (sid)");
+                assert_eq!(
+                    selected_series(&options, &values, default.clone()),
+                    "unstable"
+                );
+                assert_eq!(fallback, "sid");
+            }
+            other => panic!("expected Choose, got {other:?}"),
+        }
+    }
+
    /// Without a parsable changelog there is no candidate at all.
    #[tokio::test]
    async fn series_candidates_none_without_changelog() {
@@ -973,6 +1154,22 @@ mod tests {
            compute_new_version("15.2.0-9ubuntu1", Bump::Ubuntu).unwrap(),
            "15.2.0-9ubuntu2"
        );
+        // Ubuntu upload on top of a rebuild drops the buildN marker:
+        // appending would give 15.2.0-9build1ubuntu1, which sorts below
+        // the proper 15.2.0-9ubuntu1
+        assert_eq!(
+            compute_new_version("15.2.0-9build1", Bump::Ubuntu).unwrap(),
+            "15.2.0-9ubuntu1"
+        );
+        assert_eq!(
+            compute_new_version("15.2.0-9ubuntu1build1", Bump::Ubuntu).unwrap(),
+            "15.2.0-9ubuntu2"
+        );
+        // Native packages
+        assert_eq!(
+            compute_new_version("15.2.0build1", Bump::Ubuntu).unwrap(),
+            "15.2.0ubuntu1"
+        );

        // No change rebuild
        assert_eq!(
@@ -1229,6 +1426,38 @@ mod tests {
        assert_eq!(entry.new_version, "1.0-1ubuntu2");
    }

+    /// An Ubuntu upload of a package whose changelog carries a rebuild
+    /// version drops the buildN marker: 1.0-1build1 numbers the next entry
+    /// 1.0-1ubuntu1 (1.0-1build1ubuntu1 would sort below 1.0-1ubuntu1).
+    /// Relies on the host distro-info data listing noble (see the
+    /// distro_info tests). The git repo provides the maintainer identity:
+    /// DEBFULLNAME/DEBEMAIL are process-global and other tests mutate them
+    /// in parallel.
+    #[tokio::test]
+    async fn test_generate_entry_ubuntu_series_numbering_after_rebuild() {
+        let temp_dir = TempDir::new().unwrap();
+        let repo_dir = temp_dir.path();
+        setup_repo(repo_dir);
+        let changelog_path = repo_dir.join("debian/changelog");
+        std::fs::create_dir_all(repo_dir.join("debian")).unwrap();
+        std::fs::write(
+            &changelog_path,
+            "mypackage (1.0-1build1) noble; urgency=medium\n\n  * Initial release\n\n -- Maintainer <m@e.com>  Wed, 01 Jan 2020 00:00:00 +0000\n",
+        )
+        .unwrap();
+
+        let entry = generate_entry(
+            "debian/changelog",
+            Some(repo_dir),
+            None,
+            Some("noble"),
+            EntryKind::Normal,
+        )
+        .await
+        .unwrap();
+        assert_eq!(entry.new_version, "1.0-1ubuntu1");
+    }
+
    #[test]
    fn test_get_maintainer_info() {
        let _identity = IDENTITY_LOCK.blocking_lock();
@@ -70,6 +70,12 @@ pub trait ContextDriver {
    fn read_file(&self, path: &Path) -> io::Result<String>;
    fn write_file(&self, path: &Path, content: &str) -> io::Result<()>;
    fn exists(&self, path: &Path) -> io::Result<bool>;
+    /// Check if a path is a directory inside the context
+    ///
+    /// Distinct from [`ContextDriver::exists`] because paths returned by
+    /// [`ContextDriver::list_files`] are context-relative and can only be
+    /// classified through the context, never with a host-side stat.
+    fn is_dir(&self, path: &Path) -> io::Result<bool>;

    /// Clean up any resources held by the driver (e.g. unmount overlay filesystems).
    /// Called before the chroot directory is removed.
@@ -313,6 +319,15 @@ impl Context {
        self.driver().as_ref().unwrap().exists(path)
    }

+    /// Check if a path is a directory inside context
+    ///
+    /// Paths returned by [`Context::list_files`] are context-relative
+    /// (e.g. rooted inside the chroot for an unshare context): whether they
+    /// are directories can only be decided through the context.
+    pub fn is_dir(&self, path: &Path) -> io::Result<bool> {
+        self.driver().as_ref().unwrap().is_dir(path)
+    }
+
    /// Clean up any resources held by the driver (e.g. unmount overlay filesystems).
    /// Called before the chroot directory is removed.
    pub fn cleanup(&self) -> io::Result<()> {
@@ -155,6 +155,10 @@ impl ContextDriver for LocalDriver {
    fn exists(&self, path: &Path) -> io::Result<bool> {
        Ok(path.exists())
    }
+
+    fn is_dir(&self, path: &Path) -> io::Result<bool> {
+        Ok(path.is_dir())
+    }
 }

 fn copy_dir_recursive(src: &Path, dest: &Path) -> io::Result<()> {
@@ -385,6 +385,40 @@ mod tests {
        assert!(!dest.join("src/.svn").exists());
    }

+    /// The unshare driver maps context-relative paths onto the chroot root
+    /// on the host: `is_dir` must answer through that mapping (a host-side
+    /// stat of the unmapped path sees nothing), which is what lets the deb
+    /// package-directory search classify staged entries.
+    #[test]
+    fn test_unshare_is_dir_maps_through_the_chroot_root() {
+        let chroot = tempfile::tempdir().unwrap();
+        fs::create_dir_all(chroot.path().join("tmp/work/tree/debian")).unwrap();
+        fs::write(chroot.path().join("tmp/work/orig.tar.xz"), "tar").unwrap();
+
+        let base = Context::new(ContextConfig::Local).unwrap();
+        let ctx = Context::with_parent(
+            ContextConfig::Unshare {
+                path: chroot.path().to_string_lossy().to_string(),
+                parent: None,
+            },
+            Arc::new(base),
+        );
+
+        assert!(ctx.is_dir(std::path::Path::new("/tmp/work/tree")).unwrap());
+        assert!(
+            ctx.exists(std::path::Path::new("/tmp/work/tree/debian"))
+                .unwrap()
+        );
+        assert!(
+            !ctx.is_dir(std::path::Path::new("/tmp/work/orig.tar.xz"))
+                .unwrap()
+        );
+        assert!(
+            !ctx.exists(std::path::Path::new("/tmp/work/missing"))
+                .unwrap()
+        );
+    }
+
    /// The overlay-mount path exposes the tree verbatim, so pruning happens
    /// after the fact: nested VCS metadata must be removed recursively.
    #[test]
@@ -296,6 +296,16 @@ impl ContextDriver for SchrootDriver {
        )?;
        Ok(status.success())
    }
+
+    fn is_dir(&self, path: &Path) -> io::Result<bool> {
+        let status = self.run(
+            "test",
+            &["-d".to_string(), path.to_string_lossy().to_string()],
+            &[],
+            None,
+        )?;
+        Ok(status.success())
+    }
 }

 #[cfg(test)]
@@ -306,6 +306,14 @@ impl ContextDriver for SshDriver {
            Err(_) => Ok(false),
        }
    }
+
+    fn is_dir(&self, path: &Path) -> io::Result<bool> {
+        let sess = connect_ssh(&self.host, self.user.as_deref(), self.port)?;
+        let sftp = sess.sftp().map_err(io::Error::other)?;
+        // Same error tolerance as `exists`: an unreachable path is not a
+        // directory, and the caller decides what absence means.
+        Ok(sftp.stat(path).map(|stat| stat.is_dir()).unwrap_or(false))
+    }
 }

 impl SshDriver {
@@ -356,6 +356,11 @@ impl ContextDriver for UnshareDriver {
        let host_path = Path::new(&self.path).join(path.to_string_lossy().trim_start_matches('/'));
        self.parent().exists(&host_path)
    }
+
+    fn is_dir(&self, path: &Path) -> io::Result<bool> {
+        let host_path = Path::new(&self.path).join(path.to_string_lossy().trim_start_matches('/'));
+        Ok(host_path.is_dir())
+    }
 }

 impl UnshareDriver {
@@ -1,139 +1,24 @@
 use crate::context::{self, Context, ContextConfig};
 use crate::deb::{Phase, enter_phase};
+use crate::interrupt::CleanupHookGuard;
 use crate::report::BuildView;
 use directories::ProjectDirs;
-use std::any::Any;
 use std::error::Error;
 use std::fs;
 use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::sync::Arc;
-use std::sync::Mutex;
-use std::sync::atomic::{AtomicU64, Ordering};
-use std::time::Duration;
 use tar::Archive;
 use xz2::read::XzDecoder;

-// ---------------------------------------------------------------------------
-// Process-global cleanup hooks
-//
-// On Ctrl-C, the SIGINT handler in `ui::deb` restores the terminal and then
-// `libc::_exit(130)`s, skipping all destructors — including
-// [`EphemeralContextGuard::drop`] — which leaks the freshly bootstrapped
-// chroot under /tmp together with its bind-mounted /proc and any overlayfs
-// mounts. To make interrupt-time cleanup possible anyway, resources register
-// a self-contained cleanup hook here; the SIGINT handler drains and runs the
-// registry right before exiting.
-// ---------------------------------------------------------------------------
-
-/// A boxed, send-safe cleanup hook body
-type CleanupFn = Box<dyn Fn() + Send>;
-
-/// A pending cleanup hook together with its registry id
-struct CleanupHook {
-    id: u64,
-    f: CleanupFn,
-}
-
-/// Registry of cleanup hooks waiting to run at interrupt time
-static CLEANUP_HOOKS: Mutex<Vec<CleanupHook>> = Mutex::new(Vec::new());
-
-/// Source of the registry ids used to deregister a specific hook
-static NEXT_CLEANUP_HOOK_ID: AtomicU64 = AtomicU64::new(1);
-
-/// Register a hook to be run by [`run_cleanup_hooks`] (i.e. when the process
-/// is interrupted), returning a guard whose drop deregisters the hook again
-fn register_cleanup_hook(f: CleanupFn) -> CleanupHookGuard {
-    let id = NEXT_CLEANUP_HOOK_ID.fetch_add(1, Ordering::Relaxed);
-    CLEANUP_HOOKS.lock().unwrap().push(CleanupHook { id, f });
-    CleanupHookGuard(id)
-}
-
-/// RAII handle to a registered cleanup hook: dropping it (or an explicit
-/// [`CleanupHookGuard::deregister`]) removes the hook from the registry so
-/// the interrupt path can no longer run it
-struct CleanupHookGuard(u64);
-
-impl CleanupHookGuard {
-    /// Registry id of the hook (used to filter the registry in tests)
-    #[cfg(test)]
-    fn id(&self) -> u64 {
-        self.0
-    }
-
-    /// Remove the hook from the registry; returns whether it was still pending
-    fn deregister(&mut self) -> bool {
-        deregister_cleanup_hook(self.0)
-    }
-}
-
-impl Drop for CleanupHookGuard {
-    fn drop(&mut self) {
-        deregister_cleanup_hook(self.0);
-    }
-}
-
-/// Remove a hook from the registry; returns whether it was still pending
-fn deregister_cleanup_hook(id: u64) -> bool {
-    let mut hooks = CLEANUP_HOOKS.lock().unwrap();
-    let len_before = hooks.len();
-    hooks.retain(|hook| hook.id != id);
-    hooks.len() != len_before
-}
-
-/// Drain and run every registered cleanup hook exactly once
-///
-/// Called from the SIGINT handler right before the process exits. Draining
-/// uses `try_lock` with a bounded retry instead of a blocking lock: if the
-/// signal interrupted the main thread while it held [`CLEANUP_HOOKS`] (inside
-/// register/deregister), blocking on the same non-recursive mutex from the
-/// handler would deadlock the process. Timing out therefore skips cleanup
-/// (leaking, as before this registry existed) rather than hanging.
-pub(crate) fn run_cleanup_hooks() {
-    run_drained_hooks(drain_cleanup_hooks());
-}
-
-/// Take every pending hook out of the registry, waiting at most ~1s for the
-/// registry lock (see [`run_cleanup_hooks`] for why this must not block forever)
-fn drain_cleanup_hooks() -> Vec<CleanupHook> {
-    const RETRIES: usize = 200;
-    const RETRY_DELAY: Duration = Duration::from_millis(5);
-
-    for _ in 0..RETRIES {
-        if let Ok(mut hooks) = CLEANUP_HOOKS.try_lock() {
-            return std::mem::take(&mut *hooks);
-        }
-        std::thread::sleep(RETRY_DELAY);
-    }
-    log::error!("Timed out waiting for the cleanup hook registry; skipping interrupt cleanup");
-    Vec::new()
-}
-
-/// Run drained hooks one by one, isolating panics so that one failing hook
-/// cannot skip the remaining ones
-fn run_drained_hooks(hooks: Vec<CleanupHook>) {
-    for CleanupHook { id, f } in hooks {
-        // Hooks are arbitrary user code; assert unwind safety so they can be
-        // run inside a catching context
-        if let Err(panic) = std::panic::catch_unwind(std::panic::AssertUnwindSafe(f)) {
-            log::error!("Cleanup hook {id} panicked: {}", panic_message(&panic));
-        }
-    }
-}
-
-/// Best-effort message extraction from a panic payload
-fn panic_message(panic: &(dyn Any + Send)) -> String {
-    if let Some(s) = panic.downcast_ref::<&str>() {
-        (*s).to_string()
-    } else if let Some(s) = panic.downcast_ref::<String>() {
-        s.clone()
-    } else {
-        "non-string panic payload".to_string()
-    }
-}
-
 // ---------------------------------------------------------------------------
 // Interrupt-time chroot cleanup
+//
+// On Ctrl-C, the watchdog in `crate::interrupt` runs the hook registered in
+// [`EphemeralContextGuard::new_with_context`] right before exiting — the
+// interrupt sequence skips all destructors, which would otherwise leak the
+// freshly bootstrapped chroot under /tmp together with its bind-mounted
+// /proc and any overlayfs mounts.
 // ---------------------------------------------------------------------------

 /// Interrupt-time cleanup of an ephemeral chroot: unmount every host-side
@@ -143,9 +28,9 @@ fn panic_message(panic: &(dyn Any + Send)) -> String {
 /// Unlike [`EphemeralContextGuard::drop`], this deliberately does NOT go
 /// through the context manager, the ephemeral context's driver (whose
 /// `cleanup()` unmounts the tracked overlays) or the base context's command
-/// builder: the signal may arrive while the interrupted thread holds any of
-/// those mutexes, and re-locking them from the signal handler would deadlock.
-/// Instead it only reads /proc/mounts and spawns umount/rm directly.
+/// builder: interrupt-time hooks must be self-contained, and those
+/// machineries may be mid-mutation on the interrupted thread. Instead it
+/// only reads /proc/mounts and spawns umount/rm directly.
 ///
 /// It also differs from `drop` in that it removes the chroot regardless of
 /// the build result: the build was aborted, and leaving a still-mounted
@@ -175,31 +60,48 @@ fn sigint_cleanup_chroot(chroot_path: &Path) {
        }
    }

-    // Remove the chroot tree itself (tolerates a missing directory)
-    let status = privileged_command("rm", is_root)
-        .arg("-rf")
-        .arg(chroot_path)
-        .status();
-    match status {
-        Ok(status) if status.success() => {
+    // Remove the chroot tree itself (tolerates a missing directory). A
+    // child the Ctrl+C interrupted may still be finishing its writeout —
+    // dpkg defers SIGINT until it reaches a safe state — so retry while rm
+    // reports the tree non-empty instead of leaving it half-removed.
+    const RETRIES: usize = 10;
+    const RETRY_DELAY: std::time::Duration = std::time::Duration::from_millis(300);
+    let mut last = None;
+    for attempt in 0..=RETRIES {
+        if attempt > 0 {
+            std::thread::sleep(RETRY_DELAY);
+        }
+        last = Some(
+            privileged_command("rm", is_root)
+                .arg("-rf")
+                .arg(chroot_path)
+                .status(),
+        );
+        if matches!(&last, Some(Ok(status)) if status.success()) {
+            break;
+        }
+    }
+    match last {
+        Some(Ok(status)) if status.success() => {
            log::debug!(
                "Removed chroot {} during interrupt cleanup",
                chroot_path.display()
            );
        }
-        Ok(status) => {
+        Some(Ok(status)) => {
            log::error!(
                "Failed to remove chroot {} during interrupt cleanup \
                 (rm exited with {status}); run `pkh prune`",
                chroot_path.display()
            );
        }
-        Err(e) => {
+        Some(Err(e)) => {
            log::error!(
                "Failed to run rm for chroot {} during interrupt cleanup: {e}; run `pkh prune`",
                chroot_path.display()
            );
        }
+        None => unreachable!("at least one rm attempt ran"),
    }
 }

@@ -334,15 +236,14 @@ impl EphemeralContextGuard {

        // Register the interrupt-time cleanup hook before any heavy work: if
        // the user hits Ctrl-C during bootstrap or the build itself, the
-        // SIGINT handler unmounts and removes the chroot through this hook
-        // (see `sigint_cleanup_chroot`). This only works for a local base
-        // context: the hook must be self-contained (stored path + direct
-        // umount/rm subprocesses) and cannot go through `base_ctx`, whose
-        // driver mutex may be held by the interrupted thread. For remote or
-        // nested bases the chroot lives elsewhere, and leftovers stay
-        // handled by `pkh prune` as before.
+        // interrupt watchdog unmounts and removes the chroot through this
+        // hook (see `sigint_cleanup_chroot`). This only works for a local
+        // base context: the hook must be self-contained (stored path +
+        // direct umount/rm subprocesses) and cannot go through `base_ctx`.
+        // For remote or nested bases the chroot lives elsewhere, and
+        // leftovers stay handled by `pkh prune` as before.
        let cleanup_hook = if matches!(base_ctx.config, ContextConfig::Local) {
-            Some(register_cleanup_hook(Box::new({
+            Some(crate::interrupt::register_cleanup_hook(Box::new({
                let chroot_path = chroot_path.clone();
                move || sigint_cleanup_chroot(&chroot_path)
            })))
@@ -359,10 +260,18 @@ impl EphemeralContextGuard {
            Self::download_and_extract_chroot(series, arch, &chroot_path, base_ctx.clone(), view)
                .await
        {
-            // The guard (and its Drop) never materializes on this path, so
-            // stop tracking the chroot for interrupt cleanup; as before, a
-            // failed bootstrap leaves its partial directory in place.
-            drop(cleanup_hook);
+            // On a Ctrl+C the interrupt watchdog owns the tree: keep the
+            // hook registered (forgetting the guard) so it removes the
+            // partial directory, instead of the historical behavior of
+            // leaving it in place. Without an interrupt this is a plain
+            // bootstrap failure and the partial directory stays, as before.
+            if crate::interrupt::interrupted()
+                && let Some(hook) = cleanup_hook
+            {
+                std::mem::forget(hook);
+            } else {
+                drop(cleanup_hook);
+            }
            return Err(e);
        }

@@ -437,6 +346,11 @@ impl EphemeralContextGuard {
        let poll_interval = 5; // Check every 5 seconds

        while ctx.exists(&lockfile_path)? {
+            // Stop waiting on a Ctrl+C: the interrupt watchdog removes the
+            // (yet empty) chroot and exits without waiting for the poll
+            if crate::interrupt::interrupted() {
+                return Err("Interrupted while waiting for the chroot tarball".into());
+            }
            if wait_time >= timeout {
                log::warn!(
                    "Lockfile {} exists and has been present for more than {} seconds. \
@@ -585,6 +499,11 @@ impl EphemeralContextGuard {
        // too expensive for multi-hundred-MB chroot tarballs)
        let mut count = 0usize;
        for entry in archive.entries()? {
+            // Bail on a Ctrl+C before the interrupt watchdog's rm -rf races
+            // this loop writing entries into the tree being removed
+            if crate::interrupt::interrupted() {
+                return Err("Interrupted while extracting the chroot".into());
+            }
            let mut entry = entry?;
            entry.unpack_in(chroot_path)?;
            count += 1;
@@ -702,6 +621,20 @@ impl EphemeralContextGuard {

 impl Drop for EphemeralContextGuard {
    fn drop(&mut self) {
+        // On Ctrl+C the interrupt watchdog owns the chroot teardown through
+        // the registered hook: duplicating it here would race the hook's
+        // umount/rm (mounts vanish under each other). Dropping this guard
+        // would normally deregister the hook, so while the watchdog runs it
+        // must be leaked instead to keep it registered (if it was already
+        // drained, forgetting is a harmless no-op).
+        if crate::interrupt::interrupted() {
+            context::manager().set_current_ephemeral(self.previous_context.clone());
+            if let Some(hook) = self.cleanup_hook.take() {
+                std::mem::forget(hook);
+            }
+            return;
+        }
+
        // Deregister the interrupt-time cleanup hook first: the normal
        // cleanup below takes care of the chroot, so the hook must not fire
        // afterwards. (If a SIGINT arrived mid-drop and the hook is already
@@ -799,132 +732,8 @@ impl Drop for EphemeralContextGuard {
 }

 #[cfg(test)]
-mod cleanup_registry_tests {
+mod chroot_cleanup_tests {
    use super::*;
-    use std::sync::atomic::AtomicUsize;
-
-    /// Serializes these tests: they drain the process-global registry, and
-    /// unrelated tests (e.g. live end-to-end builds) may hold registrations
-    /// concurrently that must be neither run nor lost. Poison-proof: a test
-    /// failing while holding the lock must not cascade into the others.
-    static TEST_LOCK: Mutex<()> = Mutex::new(());
-
-    fn test_lock() -> std::sync::MutexGuard<'static, ()> {
-        TEST_LOCK
-            .lock()
-            .unwrap_or_else(std::sync::PoisonError::into_inner)
-    }
-
-    /// Drain the registry and take out only the hooks with the given ids,
-    /// putting everything else back so unrelated registrations (e.g. hooks of
-    /// live end-to-end builds running concurrently) stay pending
-    fn take_hooks(ids: &[u64]) -> Vec<CleanupHook> {
-        let drained = drain_cleanup_hooks();
-        let mut mine = Vec::new();
-        let mut others = Vec::new();
-        for hook in drained {
-            if ids.contains(&hook.id) {
-                mine.push(hook);
-            } else {
-                others.push(hook);
-            }
-        }
-        CLEANUP_HOOKS.lock().unwrap().extend(others);
-        mine
-    }
-
-    /// Register a hook that counts its invocations
-    fn counting_hook() -> (CleanupHookGuard, Arc<AtomicUsize>) {
-        let counter = Arc::new(AtomicUsize::new(0));
-        let seen = counter.clone();
-        let guard = register_cleanup_hook(Box::new(move || {
-            seen.fetch_add(1, Ordering::SeqCst);
-        }));
-        (guard, counter)
-    }
-
-    /// Hooks run in registration order, and draining means each hook runs
-    /// exactly once even across repeated cleanup passes.
-    #[test]
-    fn hooks_run_once_in_registration_order() {
-        let _serial = test_lock();
-
-        let log = Arc::new(Mutex::new(Vec::new()));
-        let mut guards = Vec::new();
-        let mut ids = Vec::new();
-        for name in ["hook-a", "hook-b", "hook-c"] {
-            let log = log.clone();
-            // The returned guard must stay alive: dropping it deregisters
-            let guard = register_cleanup_hook(Box::new(move || log.lock().unwrap().push(name)));
-            ids.push(guard.id());
-            guards.push(guard);
-        }
-
-        // Only our own hooks are extracted; they run in registration order
-        let mine = take_hooks(&ids);
-        assert_eq!(mine.len(), ids.len());
-        run_drained_hooks(mine);
-        assert_eq!(*log.lock().unwrap(), vec!["hook-a", "hook-b", "hook-c"]);
-
-        // Draining removed them: a second pass runs nothing again
-        assert!(take_hooks(&ids).is_empty());
-        assert_eq!(*log.lock().unwrap(), vec!["hook-a", "hook-b", "hook-c"]);
-
-        drop(guards);
-    }
-
-    /// A panicking hook is contained by the runner: it neither aborts the
-    /// process nor skips the hooks registered around it.
-    #[test]
-    fn panicking_hook_does_not_skip_the_others() {
-        let _serial = test_lock();
-        // The hook below panics on purpose: do not record it as a test
-        // failure in the end-of-run matrix
-        let _quiet = crate::test_support::suppress_failure_recording();
-
-        let (before, ran_before) = counting_hook();
-        let boom = register_cleanup_hook(Box::new(|| panic!("cleanup exploded")));
-        let (after, ran_after) = counting_hook();
-
-        let ids = [before.id(), boom.id(), after.id()];
-        run_drained_hooks(take_hooks(&ids));
-
-        assert_eq!(ran_before.load(Ordering::SeqCst), 1);
-        assert_eq!(ran_after.load(Ordering::SeqCst), 1);
-    }
-
-    /// Explicit deregistration removes the hook: it is no longer drained and
-    /// never runs; a second deregistration reports it as already gone.
-    #[test]
-    fn deregistered_hook_never_runs() {
-        let _serial = test_lock();
-
-        let (mut guard, ran) = counting_hook();
-
-        assert!(guard.deregister());
-        assert!(!guard.deregister());
-
-        assert!(take_hooks(&[guard.id()]).is_empty());
-        assert_eq!(ran.load(Ordering::SeqCst), 0);
-    }
-
-    /// Dropping the registration guard deregisters the hook implicitly.
-    #[test]
-    fn dropping_the_guard_deregisters_the_hook() {
-        let _serial = test_lock();
-
-        let id;
-        let ran;
-        {
-            let (guard, counter) = counting_hook();
-            id = guard.id();
-            ran = counter;
-            drop(guard);
-        }
-
-        assert!(take_hooks(&[id]).is_empty());
-        assert_eq!(ran.load(Ordering::SeqCst), 0);
-    }

    /// /proc/mounts path fields use octal escapes for whitespace and
    /// backslashes; anything else must be kept verbatim.
@@ -34,6 +34,7 @@ pub async fn build(
    series: &str,
    pocket: Option<&str>,
    build_root: &str,
+    package_dir: &Path,
    cross: bool,
    ppa: &[String],
    inject_packages: &[String],
@@ -231,10 +232,8 @@ pub async fn build(
        return Err("Could not install essential packages for the build".into());
    }

-    // Find the actual package directory
-    // Find the actual package directory
-    let package_dir =
-        crate::deb::find_package_directory(Path::new(build_root), package, version, series, &ctx)?;
+    // The package directory was resolved by the caller (the staged copy of
+    // the tree the user pointed at, or the name-pattern search fallback)
    let package_dir_str = package_dir
        .to_str()
        .ok_or("Invalid package directory path")?;
@@ -725,8 +724,17 @@ fn install_build_dependencies(
        let status = cap(&mut cmd, sink).status()?;
        if !status.success() {
            view.suspend();
-            if let Err(e) =
-                dose3_explain_dependencies(package, version, arch, build_root, cross, ctx.clone())
+            // Diagnosing a dependency failure the user interrupted themselves
+            // is wasted work
+            if !crate::interrupt::interrupted()
+                && let Err(e) = dose3_explain_dependencies(
+                    package,
+                    version,
+                    arch,
+                    build_root,
+                    cross,
+                    ctx.clone(),
+                )
            {
                log::debug!("dose-builddebcheck diagnosis failed: {e}");
            }
@@ -269,6 +269,19 @@ async fn build_binary_package_impl(
            .ok_or("Cannot find parent directory name")?;
        let build_root = format!("{}/{}", build_root, parent_dir_name.to_str().unwrap());

+        // Resolve the package directory inside the staging area. The tree
+        // the caller pointed at is authoritative (its changelog defined the
+        // package/version/series above), so its staged copy wins; the
+        // name-pattern search only runs as a fallback.
+        let package_dir = resolve_package_directory(
+            Path::new(&build_root),
+            cwd,
+            &package,
+            &version,
+            series,
+            &build_ctx,
+        )?;
+
        // Run the build using target build mode. It returns the exact set of
        // artifacts produced by this build (binary packages registered in
        // debian/files plus the generated .buildinfo/.changes), as paths
@@ -282,6 +295,7 @@ async fn build_binary_package_impl(
                    series,
                    pocket.as_deref(),
                    &build_root,
+                    &package_dir,
                    cross,
                    ppa,
                    inject,
@@ -329,6 +343,38 @@ async fn build_binary_package_impl(
    result
 }

+/// Resolve the package directory for a build inside the staged build root.
+///
+/// The tree the caller pointed at is authoritative: `cwd`'s changelog
+/// already defined the package, version and series for this build, so its
+/// staged copy is used outright when it carries a `debian/` tree. The
+/// name-pattern search ([`find_package_directory`], including the quirks
+/// overrides) only runs when that copy cannot be resolved — a default `.`
+/// cwd has no basename, and the pointed-at tree may live outside the staged
+/// parent. Embedded callers are the motivation: their working directory
+/// names (`tree`, `checkout`, ...) match none of the search patterns.
+pub(crate) fn resolve_package_directory(
+    build_root: &Path,
+    cwd: &Path,
+    package: &str,
+    version: &str,
+    series: &str,
+    ctx: &context::Context,
+) -> Result<PathBuf, Box<dyn Error>> {
+    if let Some(tree_name) = cwd.file_name() {
+        let staged_tree = build_root.join(tree_name);
+        if ctx.is_dir(&staged_tree)? && ctx.exists(&staged_tree.join("debian"))? {
+            log::debug!(
+                "Using the staged copy of {} at {}",
+                cwd.display(),
+                staged_tree.display()
+            );
+            return Ok(staged_tree);
+        }
+    }
+    find_package_directory(build_root, package, version, series, ctx)
+}
+
 /// Find the current package directory by trying both patterns:
 /// - package/package
 /// - package/package-origversion
@@ -413,11 +459,13 @@ pub(crate) fn find_package_directory(
        let entries = ctx.list_files(package_parent)?;
        let mut found_dirs = Vec::new();
        for entry in entries {
-            if entry.is_dir() {
-                if let Some(file_name) = entry.file_name() {
-                    found_dirs.push(file_name.to_string_lossy().into_owned());
-                }
-                log::debug!("  - {}", entry.display());
+            // list_files yields context-relative paths (e.g. rooted inside
+            // the chroot for an unshare context): classify through the
+            // context, a host-side stat would miss every entry.
+            let is_dir = ctx.is_dir(&entry)?;
+            log::debug!("  - {}", entry.display());
+            if is_dir && let Some(file_name) = entry.file_name() {
+                found_dirs.push(file_name.to_string_lossy().into_owned());
            }
        }

@@ -501,6 +549,101 @@ mod tests {
        }
    }

+    /// An unshare context mapped over `chroot_root`, parented on a local
+    /// context like the ephemeral build contexts are: exists/list_files/
+    /// is_dir answer through the path mapping, no namespace privileges
+    /// needed.
+    fn unshare_test_context(chroot_root: &Path) -> Context {
+        let base = Context::new(crate::context::ContextConfig::Local).unwrap();
+        Context::with_parent(
+            crate::context::ContextConfig::Unshare {
+                path: chroot_root.to_string_lossy().to_string(),
+                parent: None,
+            },
+            Arc::new(base),
+        )
+    }
+
+    /// The staging-area listing must classify entries through the context:
+    /// an unshare context returns build-root-relative paths that a host-side
+    /// stat never sees (they live under the chroot root on the host), which
+    /// used to silently empty the 'Found directories' list of the search
+    /// failure message — and with it every hint about the actual layout.
+    #[test]
+    fn find_package_directory_lists_staged_directories_through_the_context() {
+        let chroot = tempfile::tempdir().unwrap();
+        // Staged parent holding a single tree whose name matches none of
+        // the search patterns (the embedded-caller layout: <job>/tree)
+        let staged_parent = chroot.path().join("tmp/pkh-build-1/j-42");
+        std::fs::create_dir_all(staged_parent.join("tree/debian")).unwrap();
+
+        let ctx = unshare_test_context(chroot.path());
+        let err = find_package_directory(
+            Path::new("/tmp/pkh-build-1/j-42"),
+            "bc",
+            "1.07.1-1ubuntu1",
+            "questing",
+            &ctx,
+        )
+        .expect_err("no candidate matches a tree named 'tree'");
+
+        let message = err.to_string();
+        assert!(
+            message.contains("Found directories: tree"),
+            "error should list the staged directories through the context: {message}"
+        );
+    }
+
+    /// An explicit cwd must resolve to its staged copy even when its name
+    /// matches none of the search patterns: the pointed-at tree is what the
+    /// parsed changelog came from.
+    #[test]
+    fn resolve_package_directory_prefers_the_pointed_tree() {
+        let chroot = tempfile::tempdir().unwrap();
+        let staged_parent = chroot.path().join("tmp/pkh-build-1/j-42");
+        std::fs::create_dir_all(staged_parent.join("tree/debian/source")).unwrap();
+
+        let ctx = unshare_test_context(chroot.path());
+        let resolved = resolve_package_directory(
+            Path::new("/tmp/pkh-build-1/j-42"),
+            Path::new("/work/jobs/j-42/tree"),
+            "bc",
+            "1.07.1-1ubuntu1",
+            "questing",
+            &ctx,
+        )
+        .expect("the staged copy of the pointed-at tree must resolve");
+
+        assert_eq!(resolved, PathBuf::from("/tmp/pkh-build-1/j-42/tree"));
+    }
+
+    /// When the pointed-at tree is not in the staging area under its own
+    /// name, resolution falls back to the name-pattern search.
+    #[test]
+    fn resolve_package_directory_falls_back_to_the_name_search() {
+        let chroot = tempfile::tempdir().unwrap();
+        let staged_parent = chroot.path().join("tmp/pkh-build-1/j-42");
+        // Staged copy of a pulled tree: <pkg>/<pkg>-<origversion>
+        std::fs::create_dir_all(staged_parent.join("bc/bc-1.07.1/debian")).unwrap();
+
+        let ctx = unshare_test_context(chroot.path());
+        let resolved = resolve_package_directory(
+            Path::new("/tmp/pkh-build-1/j-42"),
+            // A tree never staged under that name
+            Path::new("/work/other/checkout"),
+            "bc",
+            "1.07.1-1ubuntu1",
+            "questing",
+            &ctx,
+        )
+        .expect("the pulled-tree layout must resolve via the name search");
+
+        assert_eq!(
+            resolved,
+            PathBuf::from("/tmp/pkh-build-1/j-42/bc/bc-1.07.1")
+        );
+    }
+
    async fn test_build_end_to_end(
        package: &str,
        series: &str,
@@ -837,4 +980,80 @@ mod tests {
            "error should name the unsatisfied dependency: {err}"
        );
    }
+
+    /// An embedded-caller layout — the tree checked out at <job>/tree, a
+    /// name matching none of the search patterns — must build: the staged
+    /// copy of the tree the caller pointed at is resolved directly instead
+    /// of being re-derived from package/version names (which used to fail
+    /// with 'Could not find package directory').
+    #[tokio::test]
+    #[test_log::test]
+    async fn test_deb_builds_a_tree_named_directory_end_to_end() {
+        let temp_dir = tempfile::tempdir().unwrap();
+        let pkg_dir = temp_dir.path().join("j-42/tree");
+        std::fs::create_dir_all(pkg_dir.join("debian/source")).unwrap();
+
+        std::fs::write(
+            pkg_dir.join("debian/changelog"),
+            "pkh-treetest (1.0) noble; urgency=medium\n\n  \
+             * Synthetic package built from a directory named 'tree'.\n\n \
+             -- pkh tests <pkh@example.com>  Tue, 15 Sep 2026 08:00:00 +0000\n",
+        )
+        .unwrap();
+
+        std::fs::write(
+            pkg_dir.join("debian/control"),
+            "Source: pkh-treetest\n\
+             Section: devel\n\
+             Priority: optional\n\
+             Maintainer: pkh tests <pkh@example.com>\n\
+             Standards-Version: 4.7.4\n\
+             Build-Depends: debhelper-compat (= 13)\n\
+             Architecture: any\n\
+             \n\
+             Package: pkh-treetest\n\
+             Architecture: any\n\
+             Depends: ${misc:Depends}, ${shlibs:Depends}\n\
+             Description: Package-directory resolution regression package\n \
+              Its tree lives in a directory whose name matches none of the\n \
+              package-directory search patterns.\n",
+        )
+        .unwrap();
+
+        std::fs::write(
+            pkg_dir.join("debian/rules"),
+            "#!/usr/bin/make -f\n%:\n\tdh $@\n",
+        )
+        .unwrap();
+        use std::os::unix::fs::PermissionsExt;
+        let rules = pkg_dir.join("debian/rules");
+        let mut perms = std::fs::metadata(&rules).unwrap().permissions();
+        perms.set_mode(0o755);
+        std::fs::set_permissions(&rules, perms).unwrap();
+
+        std::fs::write(pkg_dir.join("debian/source/format"), "3.0 (native)\n").unwrap();
+
+        let ctx = Arc::new(Context::new(crate::context::ContextConfig::Local).unwrap());
+
+        crate::deb::build_binary_package(DebBuildOptions {
+            series: Some("noble".to_string()),
+            cwd: Some(pkg_dir),
+            ctx: Some(ctx),
+            ..Default::default()
+        })
+        .await
+        .expect("a tree named 'tree' must build");
+
+        let deb_files: Vec<String> = std::fs::read_dir(temp_dir.path().join("j-42"))
+            .unwrap()
+            .filter_map(|e| e.ok())
+            .map(|e| e.file_name().to_string_lossy().to_string())
+            .collect();
+        assert!(
+            deb_files
+                .iter()
+                .any(|f| f.starts_with("pkh-treetest_1.0_") && f.ends_with(".deb")),
+            ".deb not produced for the 'tree'-named directory, got: {deb_files:?}"
+        );
+    }
 }
@@ -87,6 +87,11 @@ struct DistData {
    cross_pockets: Vec<String>,
    #[serde(default)]
    build_profiles: Vec<String>,
+    /// Changelog suite names aliasing a distro-info series codename
+    /// ('unstable' for Debian's 'sid'): the two names identify the same
+    /// series ([`series_suite_alias`], [`resolve_suite_alias`])
+    #[serde(default)]
+    suite_aliases: HashMap<String, String>,
    series: SeriesInfo,
 }

@@ -413,6 +418,30 @@ pub async fn get_dist_from_series(series: &str) -> Result<String, Box<dyn Error>
    Err(format!("Unknown series: {}", series).into())
 }

+/// The changelog suite name that aliases the series codename of `dist`
+/// (Debian's 'unstable' for 'sid'): the two names identify the same
+/// series. `None` when the series carries no suite alias.
+pub fn series_suite_alias(dist: &str, series: &str) -> Option<String> {
+    dist_data(dist)
+        .ok()?
+        .suite_aliases
+        .iter()
+        .find(|(_suite, codename)| codename.as_str() == series)
+        .map(|(suite, _)| suite.clone())
+}
+
+/// Identify a changelog suite name with the distro-info series codename
+/// it aliases (Debian's 'unstable' is 'sid'), and the dist that codename
+/// belongs to. `None` when `suite` is not a known alias of any dist.
+pub fn resolve_suite_alias(suite: &str) -> Option<(String, String)> {
+    for (dist, data) in DATA.dist.iter() {
+        if let Some(codename) = data.suite_aliases.get(suite) {
+            return Some((dist.clone(), codename.clone()));
+        }
+    }
+    None
+}
+
 /// Get the package pockets available for a given distribution, in search order
 ///
 /// The main archive ('') comes first so that a search without an explicit
@@ -1035,6 +1064,41 @@ mod tests {
        assert!(series.contains(&"jammy".to_string()));
    }

+    /// Suite aliases identify a changelog suite name with the series
+    /// codename of the same series: Debian's 'unstable' is 'sid'
+    #[test]
+    fn test_suite_aliases() {
+        assert_eq!(
+            resolve_suite_alias("unstable"),
+            Some(("debian".to_string(), "sid".to_string()))
+        );
+        // A series codename or unknown suite is not an alias
+        assert_eq!(resolve_suite_alias("sid"), None);
+        assert_eq!(resolve_suite_alias("noble"), None);
+        assert_eq!(
+            series_suite_alias("debian", "sid"),
+            Some("unstable".to_string())
+        );
+        assert_eq!(series_suite_alias("debian", "trixie"), None);
+        assert_eq!(series_suite_alias("ubuntu", "noble"), None);
+    }
+
+    /// Every suite alias must map to a real series of its dist, or the
+    /// selector would offer a phantom entry
+    #[tokio::test]
+    async fn test_suite_aliases_target_real_series() {
+        for (dist, data) in DATA.dist.iter() {
+            for (suite, codename) in &data.suite_aliases {
+                let series = get_ordered_series_name(dist).await.unwrap_or_default();
+                assert!(
+                    series.contains(codename),
+                    "suite alias '{suite}' of {dist} maps to '{codename}', \
+                     which is not a known series"
+                );
+            }
+        }
+    }
+
    #[tokio::test]
    async fn test_get_dist_from_series() {
        assert_eq!(get_dist_from_series("sid").await.unwrap(), "debian");
@@ -0,0 +1,310 @@
+//! Passive interrupt state shared between the CLI and the library.
+//!
+//! Everything active about Ctrl+C lives in the CLI (`main.rs`): it installs
+//! the SIGINT handler, wakes a watchdog thread, prints the interrupt notice
+//! and exits with the conventional status 130. This module only holds the
+//! state the library's own types need:
+//!
+//! - the interrupted flag ([`mark_interrupted`] / [`interrupted`]), read by
+//!   flows so they stand down while the watchdog tears everything down;
+//! - the cleanup hook registry ([`register_cleanup_hook`]) for resources
+//!   that must not outlive the process (e.g. the ephemeral build chroot,
+//!   see [`crate::deb::ephemeral`]), drained and run by the CLI watchdog
+//!   right before exiting ([`run_cleanup_hooks`]);
+//! - the reporter slot ([`set_reporter`]): the live build view registers
+//!   how to clear the terminal (and where the full log lives); the CLI
+//!   runs it as the first step of the shutdown.
+//!
+//! Nothing here installs signal handlers, prints or exits: a library
+//! consumer embedding these types keeps its own signal disposition.
+
+use std::sync::atomic::{AtomicBool, AtomicU64, Ordering};
+use std::sync::{Mutex, PoisonError};
+
+/// How the live view reports an interrupt: it clears the terminal and
+/// returns the log-file hint to print below the notice, if any
+pub type Reporter = Box<dyn FnOnce() -> Option<String> + Send>;
+
+/// A boxed, send-safe cleanup hook body
+type CleanupFn = Box<dyn Fn() + Send>;
+
+/// The reporter run before the cleanup hooks; taken out when it runs
+static REPORTER: Mutex<Option<Reporter>> = Mutex::new(None);
+
+/// Whether a Ctrl+C has been intercepted since the CLI installed the
+/// handler
+static INTERRUPTED: AtomicBool = AtomicBool::new(false);
+
+/// Registry of cleanup hooks waiting to run at interrupt time
+static CLEANUP_HOOKS: Mutex<Vec<CleanupHook>> = Mutex::new(Vec::new());
+
+/// Source of the registry ids used to deregister a specific hook
+static NEXT_CLEANUP_HOOK_ID: AtomicU64 = AtomicU64::new(1);
+
+/// A pending cleanup hook together with its registry id
+struct CleanupHook {
+    id: u64,
+    f: CleanupFn,
+}
+
+/// Record that a Ctrl+C has been intercepted; called by the CLI signal
+/// handler
+pub fn mark_interrupted() {
+    INTERRUPTED.store(true, Ordering::SeqCst);
+}
+
+/// Whether a Ctrl+C has been intercepted; flows use this to stay quiet and
+/// to leave the cleanup to the CLI watchdog
+pub fn interrupted() -> bool {
+    INTERRUPTED.load(Ordering::SeqCst)
+}
+
+/// Register how the live view reports an interrupt: the CLI watchdog runs
+/// it as the first step of the shutdown, before the cleanup hooks. At most
+/// one reporter runs per process: a later call replaces the one set before.
+/// Without any reporter the watchdog only prints the plain notice.
+pub fn set_reporter(report: Reporter) {
+    *REPORTER.lock().unwrap_or_else(PoisonError::into_inner) = Some(report);
+}
+
+/// Take the registered reporter out of the slot; `None` when no live view
+/// registered one (`--verbose`, piped output)
+pub fn take_reporter() -> Option<Reporter> {
+    REPORTER
+        .lock()
+        .unwrap_or_else(PoisonError::into_inner)
+        .take()
+}
+
+/// Register a hook to be run when the process is interrupted (after the
+/// reporter), returning a guard whose drop deregisters the hook again.
+///
+/// Hooks must be self-contained — stored paths plus direct subprocesses —
+/// and must never block indefinitely: they run in the watchdog while the
+/// interrupted flow is still unwinding, and a second Ctrl+C during cleanup
+/// is a no-op.
+pub fn register_cleanup_hook(f: CleanupFn) -> CleanupHookGuard {
+    let id = NEXT_CLEANUP_HOOK_ID.fetch_add(1, Ordering::Relaxed);
+    CLEANUP_HOOKS
+        .lock()
+        .unwrap_or_else(PoisonError::into_inner)
+        .push(CleanupHook { id, f });
+    CleanupHookGuard(id)
+}
+
+/// RAII handle to a registered cleanup hook: dropping it (or an explicit
+/// [`CleanupHookGuard::deregister`]) removes the hook from the registry so
+/// the interrupt path can no longer run it
+pub struct CleanupHookGuard(u64);
+
+impl CleanupHookGuard {
+    /// Registry id of the hook (used to filter the registry in tests)
+    #[cfg(test)]
+    fn id(&self) -> u64 {
+        self.0
+    }
+
+    /// Remove the hook from the registry; returns whether it was still
+    /// pending
+    pub fn deregister(&mut self) -> bool {
+        deregister_cleanup_hook(self.0)
+    }
+}
+
+impl Drop for CleanupHookGuard {
+    fn drop(&mut self) {
+        deregister_cleanup_hook(self.0);
+    }
+}
+
+/// Remove a hook from the registry; returns whether it was still pending
+fn deregister_cleanup_hook(id: u64) -> bool {
+    let mut hooks = CLEANUP_HOOKS.lock().unwrap_or_else(PoisonError::into_inner);
+    let len_before = hooks.len();
+    hooks.retain(|hook| hook.id != id);
+    hooks.len() != len_before
+}
+
+/// Drain and run every registered cleanup hook exactly once.
+///
+/// Called by the CLI watchdog right before the process exits. Draining uses
+/// `try_lock` with a bounded retry instead of a blocking lock as a hard
+/// upper bound on interrupt latency: the sequence must never hang waiting
+/// for a lock, however unlikely a stalled holder is. Timing out therefore
+/// skips cleanup (leaking) rather than hanging.
+pub fn run_cleanup_hooks() {
+    run_drained_hooks(drain_cleanup_hooks());
+}
+
+/// Take every pending hook out of the registry, waiting at most ~1s for the
+/// registry lock (see [`run_cleanup_hooks`] for why this must not block
+/// forever)
+fn drain_cleanup_hooks() -> Vec<CleanupHook> {
+    const RETRIES: usize = 200;
+    const RETRY_DELAY: std::time::Duration = std::time::Duration::from_millis(5);
+
+    for _ in 0..RETRIES {
+        if let Ok(mut hooks) = CLEANUP_HOOKS.try_lock() {
+            return std::mem::take(&mut *hooks);
+        }
+        std::thread::sleep(RETRY_DELAY);
+    }
+    log::error!("Timed out waiting for the cleanup hook registry; skipping interrupt cleanup");
+    Vec::new()
+}
+
+/// Run drained hooks one by one, isolating panics so that one failing hook
+/// cannot skip the remaining ones
+fn run_drained_hooks(hooks: Vec<CleanupHook>) {
+    for CleanupHook { id, f } in hooks {
+        // Hooks are arbitrary user code; assert unwind safety so they can be
+        // run inside a catching context
+        if let Err(panic) = std::panic::catch_unwind(std::panic::AssertUnwindSafe(f)) {
+            log::error!("Cleanup hook {id} panicked: {}", panic_message(&panic));
+        }
+    }
+}
+
+/// Best-effort message extraction from a panic payload
+fn panic_message(panic: &(dyn std::any::Any + Send)) -> String {
+    if let Some(s) = panic.downcast_ref::<&str>() {
+        (*s).to_string()
+    } else if let Some(s) = panic.downcast_ref::<String>() {
+        s.clone()
+    } else {
+        "non-string panic payload".to_string()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::sync::Arc;
+    use std::sync::Mutex as StdMutex;
+    use std::sync::atomic::AtomicUsize;
+
+    /// Serializes these tests: they drain the process-global registry, and
+    /// unrelated tests may hold registrations concurrently that must be
+    /// neither run nor lost. Poison-proof: a test failing while holding the
+    /// lock must not cascade into the others.
+    static TEST_LOCK: StdMutex<()> = StdMutex::new(());
+
+    fn test_lock() -> std::sync::MutexGuard<'static, ()> {
+        TEST_LOCK.lock().unwrap_or_else(PoisonError::into_inner)
+    }
+
+    /// Drain the registry and take out only the hooks with the given ids,
+    /// putting everything else back so unrelated registrations stay pending
+    fn take_hooks(ids: &[u64]) -> Vec<CleanupHook> {
+        let drained = drain_cleanup_hooks();
+        let mut mine = Vec::new();
+        let mut others = Vec::new();
+        for hook in drained {
+            if ids.contains(&hook.id) {
+                mine.push(hook);
+            } else {
+                others.push(hook);
+            }
+        }
+        CLEANUP_HOOKS
+            .lock()
+            .unwrap_or_else(PoisonError::into_inner)
+            .extend(others);
+        mine
+    }
+
+    /// Register a hook that counts its invocations
+    fn counting_hook() -> (CleanupHookGuard, Arc<AtomicUsize>) {
+        let counter = Arc::new(AtomicUsize::new(0));
+        let seen = counter.clone();
+        let guard = register_cleanup_hook(Box::new(move || {
+            seen.fetch_add(1, Ordering::SeqCst);
+        }));
+        (guard, counter)
+    }
+
+    /// Hooks run in registration order, and draining means each hook runs
+    /// exactly once even across repeated cleanup passes.
+    #[test]
+    fn hooks_run_once_in_registration_order() {
+        let _serial = test_lock();
+
+        let log = Arc::new(StdMutex::new(Vec::new()));
+        let mut guards = Vec::new();
+        let mut ids = Vec::new();
+        for name in ["hook-a", "hook-b", "hook-c"] {
+            let log = log.clone();
+            // The returned guard must stay alive: dropping it deregisters
+            let guard = register_cleanup_hook(Box::new(move || {
+                log.lock().unwrap().push(name);
+            }));
+            ids.push(guard.id());
+            guards.push(guard);
+        }
+
+        // Only our own hooks are extracted; they run in registration order
+        let mine = take_hooks(&ids);
+        assert_eq!(mine.len(), ids.len());
+        run_drained_hooks(mine);
+        assert_eq!(*log.lock().unwrap(), vec!["hook-a", "hook-b", "hook-c"]);
+
+        // Draining removed them: a second pass runs nothing again
+        assert!(take_hooks(&ids).is_empty());
+        assert_eq!(*log.lock().unwrap(), vec!["hook-a", "hook-b", "hook-c"]);
+
+        drop(guards);
+    }
+
+    /// A panicking hook is contained by the runner: it neither aborts the
+    /// process nor skips the hooks registered around it.
+    #[test]
+    fn panicking_hook_does_not_skip_the_others() {
+        let _serial = test_lock();
+        // The hook below panics on purpose: do not record it as a test
+        // failure in the end-of-run matrix
+        let _quiet = crate::test_support::suppress_failure_recording();
+
+        let (before, ran_before) = counting_hook();
+        let boom = register_cleanup_hook(Box::new(|| panic!("cleanup exploded")));
+        let (after, ran_after) = counting_hook();
+
+        let ids = [before.id(), boom.id(), after.id()];
+        run_drained_hooks(take_hooks(&ids));
+
+        assert_eq!(ran_before.load(Ordering::SeqCst), 1);
+        assert_eq!(ran_after.load(Ordering::SeqCst), 1);
+    }
+
+    /// Explicit deregistration removes the hook: it is no longer drained and
+    /// never runs; a second deregistration reports it as already gone.
+    #[test]
+    fn deregistered_hook_never_runs() {
+        let _serial = test_lock();
+
+        let (mut guard, ran) = counting_hook();
+
+        assert!(guard.deregister());
+        assert!(!guard.deregister());
+
+        assert!(take_hooks(&[guard.id()]).is_empty());
+        assert_eq!(ran.load(Ordering::SeqCst), 0);
+    }
+
+    /// Dropping the registration guard deregisters the hook implicitly.
+    #[test]
+    fn dropping_the_guard_deregisters_the_hook() {
+        let _serial = test_lock();
+
+        let id;
+        let ran;
+        {
+            let (guard, counter) = counting_hook();
+            id = guard.id();
+            ran = counter;
+            drop(guard);
+        }
+
+        assert!(take_hooks(&[id]).is_empty());
+        assert_eq!(ran.load(Ordering::SeqCst), 0);
+    }
+}
@@ -41,6 +41,11 @@ struct LaunchpadData {
    ssh_host: String,
    /// Port of the PPA SFTP upload server
    ssh_port: u16,
+    /// Host of the PPA upload queue over anonymous FTP (the transport
+    /// `pkh put` degrades to when the SSH connection never comes up)
+    ftp_host: String,
+    /// Port of the anonymous FTP upload queue
+    ftp_port: u16,
    /// Upload queue incoming directory template (`{owner}`/`{ppa}`)
    incoming_template: String,
    /// PPA package-content (apt repository) URL template
@@ -53,6 +58,13 @@ embed_data! {
    static ref LAUNCHPAD_DATA: LaunchpadData = "../data/launchpad.yml"
 }

+/// The PPA upload queue over anonymous FTP (host, port): the transport
+/// dput-ng's plain `ppa:` profile pushes over, and the one `pkh put`
+/// degrades to when the SSH connection itself never comes up.
+pub(crate) fn ppa_ftp_queue() -> (String, u16) {
+    (LAUNCHPAD_DATA.ftp_host.clone(), LAUNCHPAD_DATA.ftp_port)
+}
+
 /// Base URL of the Launchpad REST API
 fn api_base() -> &'static str {
    &LAUNCHPAD_DATA.api_base
@@ -422,6 +434,13 @@ mod tests {
        assert_eq!(target.login, None);
    }

+    /// The anonymous FTP fallback queue resolves from the same data the
+    /// dput-ng `ppa:` profile uses.
+    #[test]
+    fn ppa_ftp_queue_resolves() {
+        assert_eq!(ppa_ftp_queue(), ("ppa.launchpad.net".to_string(), 21));
+    }
+
    #[test]
    fn ppa_target_rejects_missing_separator() {
        assert!(ppa_target("just-a-name").is_err());
@@ -19,6 +19,9 @@ pub mod deb;
 pub mod debian;
 /// Obtain general information about distribution, series, etc
 pub mod distro_info;
+/// Passive interrupt state: the interrupted flag, the cleanup hook registry
+/// and the live view's reporter slot (the CLI owns the signal handling)
+pub mod interrupt;
 /// Launchpad integration: PPA upload targets and account discovery
 pub mod launchpad;
 /// Lint a source tree: lintian wrapper for full parity plus pkh-native checks (`pkh lint`)
@@ -3,7 +3,6 @@ use std::io::Write;

 extern crate clap;
 use clap::{Command, arg, command};
-use pkh::context::ContextConfig;

 extern crate flate2;

@@ -21,6 +20,155 @@ fn current_dir_or_exit() -> std::path::PathBuf {
    }
 }

+/// CLI-side Ctrl+C wiring. The passive state (interrupted flag, cleanup
+/// hook registry, reporter slot) lives in `pkh::interrupt`; everything that
+/// installs, prints or exits lives here: the SIGINT handler only wakes a
+/// watchdog through a self-pipe (async-signal-safe), and the watchdog runs
+/// the whole shutdown in thread context — the live view's reporter clears
+/// the terminal, the notice is printed, further Ctrl+C is absorbed as a
+/// no-op, the cleanup hooks release their resources, and the process exits
+/// with the conventional status 130, skipping destructors.
+mod interrupt {
+    use std::sync::atomic::{AtomicBool, AtomicI32, Ordering};
+
+    /// Whether the interrupt notice has been shown; the first caller prints
+    /// it, later ones stay silent
+    static NOTICE_SHOWN: AtomicBool = AtomicBool::new(false);
+
+    /// Whether handler, self-pipe and watchdog are in place
+    static INSTALLED: AtomicBool = AtomicBool::new(false);
+
+    /// Write end of the self-pipe the signal handler wakes the watchdog
+    /// through; `-1` until [`install`] set it up
+    static SELF_PIPE_WRITE: AtomicI32 = AtomicI32::new(-1);
+
+    /// Install the process-global Ctrl+C (SIGINT) handler; idempotent.
+    ///
+    /// When the self-pipe or the watchdog cannot be set up, the default
+    /// SIGINT disposition is kept (the process dies immediately) rather
+    /// than installing a handler that could not run the shutdown.
+    pub fn install() {
+        if INSTALLED.swap(true, Ordering::SeqCst) {
+            return;
+        }
+
+        let mut fds = [0 as libc::c_int; 2];
+        // SAFETY: pipe(2) into a two-element array we own
+        if unsafe { libc::pipe(fds.as_mut_ptr()) } != 0 {
+            INSTALLED.store(false, Ordering::SeqCst);
+            return;
+        }
+        let (read_fd, write_fd) = (fds[0], fds[1]);
+
+        // The write end is used from the signal handler: non-blocking, so
+        // even a full pipe degrades to a dropped wake-up instead of
+        // blocking the handler.
+        // SAFETY: fcntl(2) on a pipe file descriptor we just created
+        unsafe {
+            let flags = libc::fcntl(write_fd, libc::F_GETFL);
+            libc::fcntl(write_fd, libc::F_SETFL, flags | libc::O_NONBLOCK);
+        }
+        SELF_PIPE_WRITE.store(write_fd, Ordering::SeqCst);
+
+        let spawned = std::thread::Builder::new()
+            .name("pkh-interrupt".to_string())
+            .spawn(move || watchdog(read_fd));
+        if spawned.is_err() {
+            // SAFETY: closing pipe file descriptors we just created
+            unsafe {
+                libc::close(read_fd);
+                libc::close(write_fd);
+            }
+            SELF_PIPE_WRITE.store(-1, Ordering::SeqCst);
+            INSTALLED.store(false, Ordering::SeqCst);
+            return;
+        }
+
+        // SAFETY: installing a signal handler whose body only records the
+        // interruption and writes to the self-pipe (async-signal-safe)
+        unsafe {
+            libc::signal(libc::SIGINT, on_sigint as *const () as usize);
+        }
+    }
+
+    /// Never returns: park the calling thread until the watchdog exits the
+    /// process
+    ///
+    /// The watchdog owns the interrupt shutdown; a caller that would
+    /// otherwise reach its own `std::process::exit` and kill the process
+    /// mid-cleanup must park here instead.
+    pub fn wait_for_shutdown() -> ! {
+        loop {
+            std::thread::sleep(std::time::Duration::from_millis(100));
+        }
+    }
+
+    /// Signal handler body: record the interruption and wake the watchdog
+    /// through the self-pipe
+    extern "C" fn on_sigint(_sig: libc::c_int) {
+        pkh::interrupt::mark_interrupted();
+        let fd = SELF_PIPE_WRITE.load(Ordering::SeqCst);
+        if fd >= 0 {
+            // SAFETY: write(2) of one byte to the self-pipe is
+            // async-signal-safe; a failed write (e.g. EAGAIN) drops the
+            // wake-up instead of blocking the handler
+            unsafe {
+                libc::write(fd, b"x".as_ptr().cast(), 1);
+            }
+        }
+    }
+
+    /// Watchdog body: block until the signal handler's byte arrives, then
+    /// run the shutdown sequence
+    fn watchdog(read_fd: libc::c_int) {
+        let mut byte = [0u8; 1];
+        // SAFETY: read(2) into a local buffer of the announced length
+        let received = unsafe { libc::read(read_fd, byte.as_mut_ptr().cast(), 1) };
+        // The write end is never closed, so a short read cannot happen in
+        // practice; on error there is nothing to clean up either way.
+        if received > 0 {
+            run_interrupt_sequence();
+        }
+    }
+
+    /// Reporter, notice, cleanup hooks, exit 130: the whole shutdown, run
+    /// in the watchdog thread immediately on Ctrl+C — never in the signal
+    /// handler itself
+    ///
+    /// Further Ctrl+C while this runs writes bytes nobody reads: absorbed
+    /// as a no-op (send SIGTERM/SIGKILL if a hook ever hangs).
+    fn run_interrupt_sequence() {
+        let hint =
+            pkh::interrupt::take_reporter().and_then(|report| {
+                match std::panic::catch_unwind(std::panic::AssertUnwindSafe(report)) {
+                    Ok(hint) => hint,
+                    Err(_) => {
+                        log::error!("Interrupt reporter panicked");
+                        None
+                    }
+                }
+            });
+        show_notice();
+        if let Some(hint) = hint {
+            eprintln!("{hint}");
+        }
+        pkh::interrupt::run_cleanup_hooks();
+        // SAFETY: raw exit bypassing destructors, intended at interrupt time
+        unsafe {
+            libc::_exit(130);
+        }
+    }
+
+    /// Print the interrupt notice, once per process: the first caller
+    /// prints it, later ones stay silent
+    fn show_notice() {
+        if NOTICE_SHOWN.swap(true, Ordering::SeqCst) {
+            return;
+        }
+        eprintln!("CTRL+C: Build interrupted by user.");
+    }
+}
+
 fn main() {
    let rt = tokio::runtime::Runtime::new().unwrap();
    let logger =
@@ -32,7 +180,6 @@ fn main() {
    LogWrapper::new(multi.clone(), logger).try_init().unwrap();
    let matches = command!()
        .subcommand_required(true)
-        .disable_version_flag(true)
        .subcommand(
            Command::new("new")
                .about("Scaffold a new Debian source package (buildable right away)")
@@ -274,33 +421,6 @@ fn main() {
                        .help("Print the pkh-native tag catalog and exit"),
                ),
        )
-        .subcommand(
-            Command::new("context")
-                .about("Manage contexts")
-                .subcommand_required(true)
-                .subcommand(
-                    Command::new("create")
-                        .about("Create a new context")
-                        .arg(arg!(<name> "Context name"))
-                        .arg(arg!(--type <type> "Context type: ssh (only type supported for now)"))
-                        .arg(arg!(--endpoint <endpoint> "Context endpoint (for example: ssh://user@host:port)"))
-                )
-                .subcommand(
-                    Command::new("rm")
-                        .about("Remove a context")
-                        .arg(arg!(<name> "Context name"))
-                )
-                .subcommand(
-                    Command::new("ls")
-                        .about("List contexts")
-                )
-                .subcommand(Command::new("show").about("Show current context"))
-                .subcommand(
-                    Command::new("use")
-                        .about("Set current context")
-                        .arg(arg!(<name> "Context name"))
-                )
-        )
        .subcommand(
            Command::new("prune")
                .about("Prune residual pkh build artifacts and caches")
@@ -474,10 +594,13 @@ fn main() {
                match rt.block_on(pkh::changelog::series_candidates(&changelog_path)) {
                    Some(pkh::changelog::SeriesCandidates::Choose {
                        options,
+                        values,
                        default,
                        fallback,
                    }) => match pkh::ui::select_series(&options, &default) {
-                        Ok(selected) => Some(selected),
+                        Ok(selected) => {
+                            Some(pkh::changelog::selected_series(&options, &values, selected))
+                        }
                        Err(e) => {
                            error!(
                                "Series selection failed: {}. Using current series '{}' instead.",
@@ -539,6 +662,7 @@ fn main() {
        }
        Some(("build", sub_matches)) => {
            let cwd = current_dir_or_exit();
+            interrupt::install();
            let verbose = sub_matches
                .get_one::<bool>("verbose")
                .copied()
@@ -589,6 +713,11 @@ fn main() {
                    }
                }
                Err(e) => {
+                    // On Ctrl+C the interrupt watchdog owns the shutdown
+                    // (see `pkh deb`): park here instead of racing it
+                    if pkh::interrupt::interrupted() {
+                        interrupt::wait_for_shutdown();
+                    }
                    // The unmet-dependency diagnostics first, then the
                    // summary: the exact rendering the flow used to do.
                    if let Some(unmet) =
@@ -610,6 +739,7 @@ fn main() {
        }
        Some(("put", sub_matches)) => {
            let cwd = current_dir_or_exit();
+            interrupt::install();
            let ppa = sub_matches.get_one::<String>("ppa").map(|s| s.as_str());
            let changes = sub_matches
                .get_one::<String>("changes")
@@ -639,12 +769,22 @@ fn main() {
                prompter: &prompter,
            };
            if let Err(e) = rt.block_on(async { pkh::put::put(&options).await }) {
+                // On Ctrl+C the interrupt watchdog owns the shutdown (see
+                // `pkh deb`): park here instead of racing it
+                if pkh::interrupt::interrupted() {
+                    interrupt::wait_for_shutdown();
+                }
                error!("{}", e);
                std::process::exit(1);
            }
        }
        Some(("deb", sub_matches)) => {
            let cwd = current_dir_or_exit();
+            // Ctrl+C during the build must say what happened and release the
+            // ephemeral chroot instead of dying on the default disposition.
+            // The live view (when enabled) registers its own reporter on top
+            // of this to clear the widget first.
+            interrupt::install();
            let series = sub_matches.get_one::<String>("series").cloned();
            let pocket = sub_matches.get_one::<String>("pocket").cloned();
            let arch = sub_matches.get_one::<String>("arch").cloned();
@@ -711,85 +851,18 @@ fn main() {
            match result {
                Ok(_) => info!("Done."),
                Err(e) => {
+                    // On Ctrl+C the interrupt watchdog owns the shutdown: it
+                    // has already shown the notice, is releasing the build
+                    // resources, and will exit with 130 — park here instead
+                    // of racing it with another exit.
+                    if pkh::interrupt::interrupted() {
+                        interrupt::wait_for_shutdown();
+                    }
                    error!("{}", e);
                    std::process::exit(1);
                }
            }
        }
-        Some(("context", sub_matches)) => {
-            let mgr = pkh::context::manager();
-
-            match sub_matches.subcommand() {
-                Some(("create", args)) => {
-                    let name = args.get_one::<String>("name").unwrap();
-                    let type_str = args
-                        .get_one::<String>("type")
-                        .map(|s| s.as_str())
-                        .unwrap_or("local");
-
-                    let context = match type_str {
-                        "local" => ContextConfig::Local,
-                        "ssh" => {
-                            let endpoint =
-                                args.get_one::<String>("endpoint").unwrap_or_else(|| {
-                                    error!(
-                                        "An --endpoint is required to create an ssh context. \
-                                         Expected format: [ssh://][user@]host[:port]"
-                                    );
-                                    std::process::exit(1);
-                                });
-
-                            match pkh::context::ContextConfig::from_endpoint(endpoint) {
-                                Ok(config) => config,
-                                Err(e) => {
-                                    error!("{e}");
-                                    std::process::exit(1);
-                                }
-                            }
-                        }
-                        _ => {
-                            error!("Unknown context type: {}", type_str);
-                            std::process::exit(1);
-                        }
-                    };
-
-                    if let Err(e) = mgr.add_context(name, context) {
-                        error!("Failed to create context: {}", e);
-                        std::process::exit(1);
-                    }
-                    info!("Context '{}' created.", name);
-                }
-                Some(("rm", args)) => {
-                    let name = args.get_one::<String>("name").unwrap();
-                    if let Err(e) = mgr.remove_context(name) {
-                        error!("Failed to remove context: {}", e);
-                        std::process::exit(1);
-                    }
-                    info!("Context '{}' removed.", name);
-                }
-                Some(("ls", _)) => {
-                    let contexts = mgr.list_contexts();
-                    let current = mgr.current_name();
-                    for ctx in contexts {
-                        if ctx == current {
-                            println!("* {}", ctx);
-                        } else {
-                            println!("  {}", ctx);
-                        }
-                    }
-                }
-                Some(("show", _)) => {}
-                Some(("use", args)) => {
-                    let name = args.get_one::<String>("name").unwrap();
-                    if let Err(e) = mgr.set_current(name) {
-                        error!("Failed to set context: {}", e);
-                        std::process::exit(1);
-                    }
-                    info!("Switched to context '{}'.", name);
-                }
-                _ => unreachable!(),
-            }
-        }
        Some(("prune", sub_matches)) => {
            let dry_run = sub_matches
                .get_one::<bool>("dry_run")
@@ -916,3 +989,56 @@ fn main() {
        _ => unreachable!("Exhausted list of subcommands and subcommand_required prevents `None`"),
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::interrupt;
+
+    /// End-to-end check of the whole sequence: installed handler → self-pipe
+    /// → watchdog → notice + hooks → exit status 130. The sequence ends in
+    /// `libc::_exit`, so it cannot be exercised in-process: this test
+    /// re-spawns the test binary in child mode (env var), where the test
+    /// installs the handler and raises SIGINT at itself.
+    #[test]
+    fn sigint_sequence_prints_the_notice_and_exits_130() {
+        const CHILD_ENV: &str = "PKH_SIGINT_TEST_CHILD";
+        if std::env::var(CHILD_ENV).is_ok() {
+            // Child mode: install, register a pending hook, then interrupt
+            // ourselves. If the sequence never runs, the sleep below turns
+            // the failure into a wrong (zero) exit code instead of a hang.
+            interrupt::install();
+            // Alive until the watchdog drains it: a dropped guard would
+            // deregister the hook and the drain would run empty
+            let _hook = pkh::interrupt::register_cleanup_hook(Box::new(|| ()));
+            // SAFETY: kill(2) to our own process with SIGINT
+            unsafe {
+                libc::kill(libc::getpid(), libc::SIGINT);
+            }
+            std::thread::sleep(std::time::Duration::from_secs(30));
+            std::process::exit(0);
+        }
+
+        let exe = std::env::current_exe().expect("locate the test executable");
+        let output = std::process::Command::new(exe)
+            // --nocapture: libtest's capture buffer would otherwise swallow
+            // the watchdog's notice (threads spawned during a test inherit
+            // the capture), and the process exits before the harness prints
+            // anything it captured
+            .args([
+                "--exact",
+                "tests::sigint_sequence_prints_the_notice_and_exits_130",
+                "--test-threads=1",
+                "--nocapture",
+            ])
+            .env(CHILD_ENV, "1")
+            .output()
+            .expect("re-spawn the test binary");
+
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        assert_eq!(output.status.code(), Some(130), "child stderr:\n{stderr}");
+        assert!(
+            stderr.contains("CTRL+C: Build interrupted by user."),
+            "child stderr:\n{stderr}"
+        );
+    }
+}
@@ -452,50 +452,57 @@ async fn fetch_orig_tarball(
        Path::new(&info.stanza.package).to_path_buf()
    };

-    // Find the orig tarball in the file list
-    // Usually ends with .orig.tar.gz or .orig.tar.xz
-    let orig_file = info
+    // Upstream tarballs in the file list: the main orig tarball plus, for
+    // multi-orig ("3.0 (quilt)" extra-component) sources, one component
+    // tarball per bundled module (`*.orig-<component>.tar.<ext>`). dpkg-source
+    // unpacks all of them side by side, so a git pull must fetch them all.
+    let orig_files: Vec<_> = info
        .stanza
        .files
        .iter()
-        .find(|f| f.name.contains(".orig.tar."))
-        .ok_or_else(|| {
-            format!(
-                "Could not find orig tarball in file list for package '{}'. \
-                 Available files: {:?}",
-                info.stanza.package,
-                info.stanza
-                    .files
-                    .iter()
-                    .map(|f| &f.name)
-                    .collect::<Vec<_>>()
-            )
-        })?;
-    let filename = &orig_file.name;
+        .filter(|f| crate::build::changes::is_orig_tarball(&f.name))
+        .collect();
+    if orig_files.is_empty() {
+        return Err(format!(
+            "Could not find orig tarball in file list for package '{}'. \
+             Available files: {:?}",
+            info.stanza.package,
+            info.stanza
+                .files
+                .iter()
+                .map(|f| &f.name)
+                .collect::<Vec<_>>()
+        )
+        .into());
+    }

    // 1. Try executing pristine-tar

    // Setup pristine-tar branch if needed (by tracking remote branch)
    let _ = setup_pristine_tar_branch(&package_dir, info.dist.as_str());

-    if let Err(e) = checkout_pristine_tar(&package_dir, filename.as_str()) {
-        debug!(
-            "pristine-tar failed: {}. Falling back to archive download.",
-            e
-        );
+    for orig_file in orig_files {
+        let filename = &orig_file.name;

-        // 2. Fallback to archive download
-        // We download to the parent directory of the package repo (which is standard for build tools)
-        // or the current directory if cwd is None (which effectively is the parent of the package dir)
-        let target_dir = cwd.unwrap_or_else(|| Path::new("."));
-        download_file_checksum(
-            format!("{}/{}", info.archive_url, filename).as_str(),
-            &orig_file.checksum,
-            orig_file.checksum_algo,
-            target_dir,
-            progress,
-        )
-        .await?;
+        if let Err(e) = checkout_pristine_tar(&package_dir, filename.as_str()) {
+            debug!(
+                "pristine-tar failed: {}. Falling back to archive download.",
+                e
+            );
+
+            // 2. Fallback to archive download
+            // We download to the parent directory of the package repo (which is standard for build tools)
+            // or the current directory if cwd is None (which effectively is the parent of the package dir)
+            let target_dir = cwd.unwrap_or_else(|| Path::new("."));
+            download_file_checksum(
+                format!("{}/{}", info.archive_url, filename).as_str(),
+                &orig_file.checksum,
+                orig_file.checksum_algo,
+                target_dir,
+                progress,
+            )
+            .await?;
+        }
    }

    Ok(())
@@ -844,23 +851,29 @@ mod tests {
            }
        }

-        // Check for orig tarball in package dir (only for non-native packages)
-        let mut found_tarball = false;
+        // Check for the orig tarballs in the package dir (only for non-native
+        // packages): every orig listed in the stanza must be present, including
+        // the component tarballs of multi-orig packages (dpkg-source needs them
+        // all to unpack the merged upstream tree)
        let mut found_dsc = false;
-        for entry in std::fs::read_dir(package_dir).unwrap() {
+        for entry in std::fs::read_dir(&package_dir).unwrap() {
            let entry = entry.unwrap();
            let name = entry.file_name().to_string_lossy().to_string();
-            if name.contains(".orig.tar.") {
-                found_tarball = true;
-            }
            if name.ends_with(".dsc") {
                found_dsc = true;
            }
        }

-        // Only check for orig tarball if the package is not native
        if !info.is_native() {
-            assert!(found_tarball, "Orig tarball not found in package dir");
+            for file in &info.stanza.files {
+                if crate::build::changes::is_orig_tarball(&file.name) {
+                    assert!(
+                        package_dir.join(&file.name).exists(),
+                        "Orig tarball '{}' not found in package dir",
+                        file.name
+                    );
+                }
+            }
        }
        assert!(found_dsc, "DSC file not found in package dir");
    }
@@ -914,6 +927,17 @@ mod tests {
        test_pull_package_end_to_end("paraview", Some("noble"), None, None).await;
    }

+    /// Multi-orig ("3.0 (quilt)" extra component) regression test: node-jest
+    /// ships its bundled modules as separate `*.orig-<component>.tar.xz`
+    /// tarballs next to the main orig. The git pull path must fetch every
+    /// component, or the later `dpkg-source -b` quilt verification fails
+    /// with "can't find file to patch" on the first patch touching a
+    /// component directory.
+    #[tokio::test]
+    async fn test_pull_node_jest_debian_end_to_end() {
+        test_pull_package_end_to_end("node-jest", Some("trixie"), None, None).await;
+    }
+
    /// Build a minimal uncompressed ustar archive from (name, data) entries.
    ///
    /// Raw header blocks are crafted instead of using `tar::Builder` because
@@ -0,0 +1,456 @@
+//! Anonymous FTP transport for the Launchpad PPA upload queue: the graceful
+//! degradation of the SFTP transport when the SSH connection itself never
+//! comes up (name resolution, TCP, banner or key exchange). dput-ng's plain
+//! `ppa:user/ppa` profile pushes over this same queue — ppa.launchpad.net
+//! over FTP, anonymous login, incoming `~user/ppa` — so it is the
+//! interoperability-tested path.
+//!
+//! The client is [`suppaftp`]'s (plain-FTP, no TLS) blocking stream on the
+//! same time-bounded sockets as the ssh2 transport: the TCP connect and
+//! the control/data channel reads and writes all carry timeouts, so a
+//! black-holed or stalled server fails the upload instead of hanging it
+//! (suppaftp's defaults do not bound them). The upload order (payload
+//! first, `.changes` last — the caller passes the files in that order) and
+//! the best-effort cleanup of a failed upload (`DELE` of what was already
+//! pushed, in reverse upload order) mirror the SFTP path exactly.
+
+use std::fs::File;
+use std::io::{Read, Write};
+use std::net::{SocketAddr, TcpStream};
+use std::path::{Path, PathBuf};
+use std::time::Duration;
+
+use suppaftp::types::FileType;
+use suppaftp::{FtpError, FtpStream};
+
+use super::ssh;
+
+/// Bounds one TCP connection attempt, to the control channel or a passive
+/// data port: `connect(2)` would otherwise block for minutes (or forever,
+/// behind a silent firewall). Generous enough for slow links to Launchpad,
+/// short enough that a dead target fails in seconds — the same value and
+/// rationale as the SSH path's bound.
+const TCP_CONNECT_TIMEOUT: Duration = Duration::from_secs(15);
+
+/// Read/write timeout on the control channel: every reply is a few bytes,
+/// so a stalled server has had its say by the time this expires.
+const CONTROL_TIMEOUT: Duration = Duration::from_secs(60);
+
+/// Write timeout of one data-transfer chunk: the clock restarts at every
+/// write, so the wall-clock duration of a large upload is not bounded by
+/// design — but a black-holed data connection fails one chunk after this
+/// budget.
+const DATA_TIMEOUT: Duration = Duration::from_secs(120);
+
+/// Data transfers stream in chunks of this size.
+const CHUNK_SIZE: usize = 32 * 1024;
+
+/// Upload `files` to the `incoming` queue of `host:port` over anonymous FTP,
+/// in the order given (payload first, `.changes` last — the queue processor
+/// must never observe a `.changes` without its payload).
+/// `on_progress(name, uploaded_bytes, total_bytes)` reports progress.
+///
+/// A failure mid-upload best-effort removes what was already pushed (`DELE`,
+/// reverse upload order — a lingering payload in the write-only queue area
+/// is only hygiene) before returning the original error, like the SFTP
+/// path's [`super::cleanup_partial_upload`].
+pub fn upload_queue(
+    host: &str,
+    port: u16,
+    incoming: &str,
+    files: &[(PathBuf, String)],
+    on_progress: &dyn Fn(&str, u64, u64),
+) -> Result<(), Box<dyn std::error::Error>> {
+    let mut ftp = connect(host, port)?;
+    let who = std::env::var("USER").unwrap_or_else(|_| "anonymous".to_string());
+    ftp.login("anonymous".to_string(), format!("{who}@pkh.invalid"))
+        .map_err(|e| format!("the FTP queue rejected the anonymous login: {e}"))?;
+    ftp.cwd(incoming)
+        .map_err(|e| format!("cannot enter the upload queue '{incoming}': {e}"))?;
+    ftp.transfer_type(FileType::Binary)
+        .map_err(|e| format!("the FTP queue refused binary transfers: {e}"))?;
+
+    // Remote names pushed so far, in upload order, for the cleanup
+    let mut uploaded: Vec<String> = Vec::new();
+    for (path, name) in files {
+        if let Err(e) = store(&mut ftp, path, name, on_progress) {
+            // The failed file itself joins the cleanup: its `STOR` was
+            // accepted before the transfer failure, so a partial may be
+            // sitting in the queue
+            for leftover in super::cleanup_list(&uploaded, Some(name)) {
+                match ftp.rm(leftover.as_str()) {
+                    Ok(()) => {
+                        log::info!("Removed leftover {leftover} from the failed upload")
+                    }
+                    Err(e) => log::warn!(
+                        "Could not remove the leftover {leftover} of the \
+                         failed upload: {e}"
+                    ),
+                }
+            }
+            return Err(e);
+        }
+        uploaded.push(name.clone());
+    }
+
+    // Best effort: the queue keeps what it accepted, so a failure here must
+    // not fail a completed upload
+    if let Err(e) = ftp.quit() {
+        log::debug!("closing the FTP session: {e}");
+    }
+    Ok(())
+}
+
+/// Connect to the queue, read its banner and set every time bound and
+/// workaround the plain suppaftp stream does not carry by itself.
+fn connect(host: &str, port: u16) -> Result<FtpStream, Box<dyn std::error::Error>> {
+    let tcp = ssh::tcp_connect(host, port)?;
+    let mut ftp = FtpStream::connect_with_stream(tcp)?.passive_stream_builder(data_connect);
+    {
+        let control = ftp.get_ref();
+        control.set_read_timeout(Some(CONTROL_TIMEOUT))?;
+        control.set_write_timeout(Some(CONTROL_TIMEOUT))?;
+    }
+    // A `PASV` reply announcing an unroutable address (a server behind NAT
+    // that does not know its public IP) means the control connection's peer
+    ftp.set_passive_nat_workaround(true);
+    Ok(ftp)
+}
+
+/// The passive data-channel connect: bounded like every other network call,
+/// where suppaftp's default builder is a plain, unbounded
+/// `TcpStream::connect`.
+fn data_connect(addr: SocketAddr) -> Result<TcpStream, FtpError> {
+    TcpStream::connect_timeout(&addr, TCP_CONNECT_TIMEOUT).map_err(FtpError::ConnectionError)
+}
+
+/// Upload `path` as `name` over a passive data connection, reporting
+/// progress through `on_progress` per chunk. `finish` reads the transfer
+/// completion reply — the only way to learn the server accepted the file.
+fn store(
+    ftp: &mut FtpStream,
+    path: &Path,
+    name: &str,
+    on_progress: &dyn Fn(&str, u64, u64),
+) -> Result<(), Box<dyn std::error::Error>> {
+    let mut upload = ftp
+        .put_with_stream(name)
+        .map_err(|e| format!("the FTP queue rejected '{name}': {e}"))?;
+    if let suppaftp::DataStream::Tcp(socket) = upload.get_mut() {
+        socket.set_write_timeout(Some(DATA_TIMEOUT))?;
+    }
+
+    let mut file =
+        File::open(path).map_err(|e| format!("cannot read '{}': {e}", path.display()))?;
+    let total = file.metadata().map(|m| m.len()).unwrap_or(0);
+    let mut buffer = vec![0u8; CHUNK_SIZE];
+    let mut uploaded: u64 = 0;
+    loop {
+        let read = file.read(&mut buffer)?;
+        if read == 0 {
+            break;
+        }
+        upload.write_all(&buffer[..read])?;
+        uploaded += read as u64;
+        on_progress(name, uploaded, total);
+    }
+    upload
+        .finish()
+        .map_err(|e| format!("upload of '{name}' failed: {e}"))?;
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::collections::HashMap;
+    use std::net::TcpListener;
+    use std::sync::Arc;
+    use std::sync::atomic::{AtomicUsize, Ordering};
+
+    use parking_lot::Mutex;
+
+    /// In-process fake of the Launchpad FTP upload queue: one control
+    /// session speaking the protocol subset the client uses (banner,
+    /// USER/PASS, CWD, TYPE, PASV, STOR, DELE, QUIT). Records every
+    /// command, stores received bytes under the `STOR` name, and can be
+    /// told to reject one `STOR` (by index) to exercise the cleanup. Its
+    /// `PASV` replies announce `0.0.0.0`, the NAT form, so the
+    /// happy-path test proves the control-peer fallback too.
+    struct FakeQueue {
+        addr: SocketAddr,
+        commands: Arc<Mutex<Vec<String>>>,
+        files: Arc<Mutex<HashMap<String, Vec<u8>>>>,
+    }
+
+    impl FakeQueue {
+        /// Serve one session on a background thread, greeting it with
+        /// `banner` and rejecting the `STOR` number `reject_stor`, when
+        /// set.
+        fn start(banner: &str, reject_stor: Option<usize>) -> FakeQueue {
+            let listener = TcpListener::bind("127.0.0.1:0").unwrap();
+            let addr = listener.local_addr().unwrap();
+            let commands = Arc::new(Mutex::new(Vec::new()));
+            let files = Arc::new(Mutex::new(HashMap::new()));
+            let (c, f) = (Arc::clone(&commands), Arc::clone(&files));
+            let banner = banner.to_string();
+            std::thread::spawn(move || serve(listener, &banner, c, f, reject_stor));
+            FakeQueue {
+                addr,
+                commands,
+                files,
+            }
+        }
+    }
+
+    fn serve(
+        listener: TcpListener,
+        banner: &str,
+        commands: Arc<Mutex<Vec<String>>>,
+        files: Arc<Mutex<HashMap<String, Vec<u8>>>>,
+        reject_stor: Option<usize>,
+    ) {
+        use std::io::BufRead;
+
+        let (stream, _) = listener.accept().unwrap();
+        let mut reader = std::io::BufReader::new(stream.try_clone().unwrap());
+        let mut writer = stream;
+        writer
+            .write_all(format!("{banner}\r\n").as_bytes())
+            .unwrap();
+
+        let mut pending_data: Option<TcpListener> = None;
+        let stor_index = AtomicUsize::new(0);
+        loop {
+            let mut line = String::new();
+            if reader.read_line(&mut line).unwrap_or(0) == 0 {
+                break;
+            }
+            let cmd = line.trim_end().to_string();
+            commands.lock().push(cmd.clone());
+            let (verb, arg) = cmd.split_once(' ').unwrap_or((cmd.as_str(), ""));
+            match verb {
+                "USER" | "PASS" => {
+                    writer
+                        .write_all(b"230 Anonymous login ok, access restrictions apply.\r\n")
+                        .unwrap();
+                }
+                "CWD" => {
+                    writer.write_all(b"250 Command successful\r\n").unwrap();
+                }
+                "TYPE" => {
+                    writer.write_all(b"200 Type set to I\r\n").unwrap();
+                }
+                "PASV" => {
+                    let data = TcpListener::bind("127.0.0.1:0").unwrap();
+                    let port = data.local_addr().unwrap().port();
+                    writer
+                        .write_all(
+                            format!(
+                                "227 Entering Passive Mode (0,0,0,0,{},{})\r\n",
+                                port / 256,
+                                port % 256
+                            )
+                            .as_bytes(),
+                        )
+                        .unwrap();
+                    pending_data = Some(data);
+                }
+                "STOR" => {
+                    let index = stor_index.fetch_add(1, Ordering::SeqCst);
+                    if Some(index) == reject_stor {
+                        writer.write_all(b"550 Permission denied\r\n").unwrap();
+                        continue;
+                    }
+                    writer.write_all(b"150 Ok to send data\r\n").unwrap();
+                    let (mut data, _) = pending_data.take().unwrap().accept().unwrap();
+                    let mut bytes = Vec::new();
+                    data.read_to_end(&mut bytes).unwrap();
+                    files.lock().insert(arg.to_string(), bytes);
+                    writer.write_all(b"226 Transfer complete\r\n").unwrap();
+                }
+                "DELE" => {
+                    if files.lock().remove(arg).is_some() {
+                        writer.write_all(b"250 File deleted\r\n").unwrap();
+                    } else {
+                        writer.write_all(b"550 No such file\r\n").unwrap();
+                    }
+                }
+                "QUIT" => {
+                    writer.write_all(b"221 Bye\r\n").unwrap();
+                    break;
+                }
+                other => {
+                    writer
+                        .write_all(format!("502 Command '{other}' not implemented\r\n").as_bytes())
+                        .unwrap();
+                }
+            }
+        }
+    }
+
+    /// A temp file with `content`, to upload.
+    fn upload_file(dir: &Path, name: &str, content: &[u8]) -> (PathBuf, String) {
+        let path = dir.join(name);
+        std::fs::write(&path, content).unwrap();
+        (path, name.to_string())
+    }
+
+    /// The full push: anonymous login, the queue directory entered,
+    /// payload files uploaded in order before the `.changes`, their bytes
+    /// intact, and progress reported up to each file's size.
+    #[test]
+    fn upload_queue_pushes_payload_before_changes() {
+        let queue = FakeQueue::start("220 Launchpad upload server", None);
+        let dir = tempfile::tempdir().unwrap();
+        let files = vec![
+            upload_file(dir.path(), "pkg_1.0.orig.tar.xz", b"orig bytes"),
+            upload_file(dir.path(), "pkg_1.0-1.dsc", b"dsc bytes"),
+            upload_file(dir.path(), "pkg_1.0-1_source.changes", b"changes bytes"),
+        ];
+        let seen = Arc::new(Mutex::new(Vec::new()));
+        let progress_log = Arc::clone(&seen);
+
+        upload_queue(
+            "127.0.0.1",
+            queue.addr.port(),
+            "~vhaudiquet/lp2167827",
+            &files,
+            &|name, uploaded, total| {
+                progress_log
+                    .lock()
+                    .push((name.to_string(), uploaded, total))
+            },
+        )
+        .unwrap();
+
+        let commands = queue.commands.lock().clone();
+        assert_eq!(
+            commands[0], "USER anonymous",
+            "the anonymous login comes first"
+        );
+        assert_eq!(
+            commands
+                .iter()
+                .filter(|c| c == &"CWD ~vhaudiquet/lp2167827")
+                .count(),
+            1
+        );
+        let cwd = commands.iter().position(|c| c.starts_with("CWD")).unwrap();
+        let first_stor = commands.iter().position(|c| c.starts_with("STOR")).unwrap();
+        assert!(cwd < first_stor, "the queue directory is entered first");
+        assert!(
+            commands.iter().any(|c| c == "TYPE I"),
+            "binary transfers are requested"
+        );
+        // Upload order: the payload first, the .changes last
+        let stors: Vec<&String> = commands.iter().filter(|c| c.starts_with("STOR")).collect();
+        assert_eq!(
+            stors.iter().map(|s| s.as_str()).collect::<Vec<_>>(),
+            vec![
+                "STOR pkg_1.0.orig.tar.xz",
+                "STOR pkg_1.0-1.dsc",
+                "STOR pkg_1.0-1_source.changes",
+            ]
+        );
+        assert_eq!(*commands.last().unwrap(), "QUIT");
+
+        // The received bytes are intact
+        let stored = queue.files.lock();
+        assert_eq!(stored.get("pkg_1.0.orig.tar.xz").unwrap(), b"orig bytes");
+        assert_eq!(stored.get("pkg_1.0-1.dsc").unwrap(), b"dsc bytes");
+        assert_eq!(
+            stored.get("pkg_1.0-1_source.changes").unwrap(),
+            b"changes bytes"
+        );
+
+        // Progress reached each file's size
+        let progress = seen.lock();
+        for (path, name) in &files {
+            let size = path.metadata().unwrap().len();
+            let reached = progress
+                .iter()
+                .any(|(n, uploaded, total)| n == name && *uploaded == size && *total == size);
+            assert!(reached, "no progress report completed for '{name}'");
+        }
+    }
+
+    /// A `STOR` the queue rejects fails the upload, and the client removes
+    /// what it already pushed — the failed file first, then the earlier
+    /// payloads, in reverse upload order — before returning the error.
+    #[test]
+    fn upload_queue_cleans_up_after_a_rejected_stor() {
+        let queue = FakeQueue::start("220 Launchpad upload server", Some(1));
+        let dir = tempfile::tempdir().unwrap();
+        let files = vec![
+            upload_file(dir.path(), "one.dsc", b"one"),
+            upload_file(dir.path(), "two.tar.xz", b"two"),
+            upload_file(dir.path(), "three.changes", b"three"),
+        ];
+
+        let err = upload_queue(
+            "127.0.0.1",
+            queue.addr.port(),
+            "~user/ppa",
+            &files,
+            &|_, _, _| {},
+        )
+        .unwrap_err();
+        assert!(
+            err.to_string().contains("rejected 'two.tar.xz'"),
+            "the error names the rejected file, got: {err}"
+        );
+
+        let commands = queue.commands.lock();
+        let deles: Vec<&String> = commands.iter().filter(|c| c.starts_with("DELE")).collect();
+        assert_eq!(
+            deles.iter().map(|d| d.as_str()).collect::<Vec<_>>(),
+            vec!["DELE two.tar.xz", "DELE one.dsc"],
+            "the failed file is removed first, then the earlier payloads"
+        );
+        let files = queue.files.lock();
+        assert!(
+            !files.contains_key("one.dsc"),
+            "the pushed payload is removed"
+        );
+        assert!(!files.contains_key("three.changes"), "never reached");
+    }
+
+    /// A multi-line banner (`220-first` closed by `220 last`) parses like
+    /// the single-line form.
+    #[test]
+    fn upload_queue_reads_multiline_replies() {
+        let queue = FakeQueue::start("220-Launchpad\r\n220 upload server", None);
+        let dir = tempfile::tempdir().unwrap();
+        let files = vec![upload_file(dir.path(), "pkg.dsc", b"bytes")];
+
+        upload_queue(
+            "127.0.0.1",
+            queue.addr.port(),
+            "~user/ppa",
+            &files,
+            &|_, _, _| {},
+        )
+        .unwrap();
+
+        let stored = queue.files.lock();
+        assert_eq!(stored.get("pkg.dsc").unwrap(), b"bytes");
+    }
+
+    /// Live control-channel handshake with the real Launchpad FTP queue:
+    /// banner, anonymous login and a `CWD` — nothing is uploaded, the
+    /// queue is left untouched. For deliberate ad-hoc runs
+    /// (`cargo test -- --ignored`), not the pre-commit pass: it hits the
+    /// network.
+    #[test]
+    #[ignore = "hits the network: the real Launchpad FTP queue"]
+    fn live_launchpad_control_channel() {
+        let (host, port) = crate::launchpad::ppa_ftp_queue();
+        assert_eq!((host.as_str(), port), ("ppa.launchpad.net", 21));
+
+        let mut ftp = connect(&host, port).unwrap();
+        ftp.login("anonymous", "pkh@invalid").unwrap();
+        ftp.cwd("/").unwrap();
+        ftp.quit().unwrap();
+    }
+}
@@ -1,17 +1,12 @@
-//! Native upload of built source packages (`pkh put`): the dput
-//! replacement. Resolves the upload target, discovers and validates the
-//! `.changes` file and its artifacts, then pushes them over SFTP with
-//! host-key verification and an upload record preventing accidental
-//! duplicate uploads.
-//!
-//! Payload files are uploaded first and the `.changes` file last, like
-//! dput does, so a partially uploaded set cannot be picked up by the
-//! server-side queue processors. A run that fails mid-upload removes its
-//! already-uploaded files from the incoming queue (best effort), so a
-//! retried upload starts from a clean queue; a failed upload is never
-//! recorded in the upload log, so a re-run replays every file.
+//! PPA upload: the dput replacement. Resolves the upload target, discovers
+//! and validates the `.changes` file and its artifacts, then pushes them
+//! over SFTP with host-key verification and an upload record preventing
+//! accidental duplicate uploads. When the SSH connection itself never
+//! comes up, the upload degrades to the anonymous FTP queue — the
+//! transport dput's plain `ppa:` profiles use — through [`ftp`].

 pub mod changes;
+pub mod ftp;
 pub mod ssh;
 pub mod target;

@@ -139,11 +134,6 @@ async fn put_impl(opts: &PutOptions<'_>) -> Result<(), Box<dyn std::error::Error
        .into());
    }

-    opts.view
-        .message(&format!("Connecting to {login}@{host}:{port}..."));
-    let session = ssh::connect(&host, port, &login, &ssh_config, opts.prompter)?;
-    let sftp = ssh::sftp(&session)?;
-
    // Payload first, the .changes file last (like dput), so the server-side
    // queue processor can never pick up an incomplete upload
    let dir = changes_path.parent().unwrap_or_else(|| Path::new("."));
@@ -157,48 +147,50 @@ async fn put_impl(opts: &PutOptions<'_>) -> Result<(), Box<dyn std::error::Error
        .and_then(|n| n.to_str())
        .ok_or_else(|| format!("invalid .changes path: {}", changes_path.display()))?
        .to_string();
-    uploads.push((changes_path.clone(), changes_name.clone()));
+    uploads.push((changes_path.clone(), changes_name));

    let incoming = target.incoming.trim_end_matches('/');

-    // Remote names of the files uploaded so far, in upload order (the
-    // .changes last). A run failing mid-upload removes these from the
-    // write-only incoming queue before returning: the uploaded payloads
-    // would otherwise linger in the queue area forever, and a .changes
-    // truncated by a failed close could even be picked up by the scanner.
-    let mut uploaded: Vec<String> = Vec::new();
-
-    for (path, name) in &uploads {
-        let size = match path.metadata() {
-            Ok(metadata) => metadata.len(),
-            Err(e) => {
-                // Nothing was attempted for this file: only what earlier
-                // iterations uploaded needs removing
-                let error: Box<dyn std::error::Error> =
-                    format!("cannot stat '{}': {}", path.display(), e).into();
-                cleanup_partial_upload(&sftp, incoming, &uploaded, None, &host);
-                return Err(error);
-            }
-        };
-        let remote = format!("{incoming}/{name}");
-        let label = format!("Uploading {name}");
-        let view = opts.view;
-        let on_progress = |uploaded: u64| view.progress(&label, uploaded as usize, size as usize);
-        let result = ssh::upload_file(&sftp, path, &remote, &host, &on_progress);
-        if let Err(e) = result {
-            // The failed file itself joins the cleanup: its remote `create`
-            // may have succeeded before the failure, leaving a partial — or,
-            // on a failed close, a truncated — file behind
-            cleanup_partial_upload(&sftp, incoming, &uploaded, Some(name), &host);
-            return Err(e);
+    // The upload queue is SFTP first, degrading to the anonymous FTP
+    // queue when the SSH connection itself never comes up (name
+    // resolution, TCP, banner or key exchange): dput pushes PPAs over
+    // that FTP queue by default, so it is the interoperability-tested
+    // fallback. A server that answers but refuses the upload (host key
+    // not accepted, no matching key) stays an error: silently switching
+    // transport would bypass the refusal.
+    opts.view
+        .message(&format!("Connecting to {login}@{host}:{port}..."));
+    let transfer = match ssh::connect(&host, port, &login, &ssh_config, opts.prompter) {
+        Ok(session) => sftp_transfer(&session, &uploads, incoming, &host, opts.view),
+        Err(ssh::ConnectFailure::Transport(e)) => {
+            log::warn!("SSH transport to {host}:{port} failed: {e}");
+            let (ftp_host, ftp_port) = launchpad::ppa_ftp_queue();
+            opts.view.message(&format!(
+                "Falling back to the anonymous FTP queue on {ftp_host}:{ftp_port} \
+                 (dput's upload method)..."
+            ));
+            ftp::upload_queue(
+                &ftp_host,
+                ftp_port,
+                incoming,
+                &uploads,
+                &|name, uploaded, total| {
+                    opts.view.progress(
+                        &format!("Uploading {name}"),
+                        uploaded as usize,
+                        total as usize,
+                    );
+                },
+            )
        }
-        uploaded.push(name.clone());
-    }
+        Err(ssh::ConnectFailure::Refused(e)) => return Err(e),
+    };
+    transfer?;

    // Recorded only once the whole upload succeeded: the log backs the
    // duplicate-upload guard, and a failed upload must not count as
-    // uploaded (a re-run replays every file — `sftp.create` truncates, so
-    // replaying is safe).
+    // uploaded (a re-run replays every file — `sftp.create` truncates and
+    // the FTP `STOR` overwrites, so replaying is safe).
    record_upload(&upload_log_path()?, &record)?;

    info!(
@@ -212,6 +204,54 @@ async fn put_impl(opts: &PutOptions<'_>) -> Result<(), Box<dyn std::error::Error
    Ok(())
 }

+/// Push `uploads` over SFTP: payload files first, the `.changes` last
+/// (like dput), so the server-side queue processor can never pick up an
+/// incomplete upload. Best-effort removal of a partial upload, mirroring
+/// the FTP transport's `DELE` cleanup ([`ftp::upload_queue`]).
+fn sftp_transfer(
+    session: &ssh2::Session,
+    uploads: &[(PathBuf, String)],
+    incoming: &str,
+    host: &str,
+    view: &dyn BuildView,
+) -> Result<(), Box<dyn std::error::Error>> {
+    let sftp = ssh::sftp(session)?;
+
+    // Remote names of the files uploaded so far, in upload order (the
+    // .changes last). A run failing mid-upload removes these from the
+    // write-only incoming queue before returning: the uploaded payloads
+    // would otherwise linger in the queue area forever, and a .changes
+    // truncated by a failed close could even be picked up by the scanner.
+    let mut uploaded: Vec<String> = Vec::new();
+
+    for (path, name) in uploads {
+        let size = match path.metadata() {
+            Ok(metadata) => metadata.len(),
+            Err(e) => {
+                // Nothing was attempted for this file: only what earlier
+                // iterations uploaded needs removing
+                let error: Box<dyn std::error::Error> =
+                    format!("cannot stat '{}': {}", path.display(), e).into();
+                cleanup_partial_upload(&sftp, incoming, &uploaded, None, host);
+                return Err(error);
+            }
+        };
+        let remote = format!("{incoming}/{name}");
+        let label = format!("Uploading {name}");
+        let on_progress = |uploaded: u64| view.progress(&label, uploaded as usize, size as usize);
+        let result = ssh::upload_file(&sftp, path, &remote, host, &on_progress);
+        if let Err(e) = result {
+            // The failed file itself joins the cleanup: its remote `create`
+            // may have succeeded before the failure, leaving a partial — or,
+            // on a failed close, a truncated — file behind
+            cleanup_partial_upload(&sftp, incoming, &uploaded, Some(name), host);
+            return Err(e);
+        }
+        uploaded.push(name.clone());
+    }
+    Ok(())
+}
+
 /// The remote names to attempt removing after a failed upload: everything
 /// already uploaded plus, when set, `failed` (the file whose upload just
 /// failed — its remote `create` may have succeeded before the failure,
@@ -219,8 +259,9 @@ async fn put_impl(opts: &PutOptions<'_>) -> Result<(), Box<dyn std::error::Error
 /// so a `.changes` is removed before the payloads it references and the
 /// queue scanner never observes the payload set shrinking under a
 /// still-present `.changes`. Pure so the ordering decision is testable
-/// without a server; the network side is [`cleanup_partial_upload`].
-fn cleanup_list(uploaded: &[String], failed: Option<&str>) -> Vec<String> {
+/// without a server; the network sides are [`cleanup_partial_upload`] and
+/// the FTP transport's `DELE` loop ([`ftp`]).
+pub(crate) fn cleanup_list(uploaded: &[String], failed: Option<&str>) -> Vec<String> {
    let mut names: Vec<String> = uploaded.to_vec();
    if let Some(failed) = failed {
        names.push(failed.to_string());
@@ -253,7 +253,9 @@ fn duration_ms(timeout: Duration) -> u32 {
 /// address in order (like `TcpStream::connect` does) with
 /// [`TCP_CONNECT_TIMEOUT`] per attempt instead of blocking indefinitely.
 /// Fails with a message naming the target and every per-address error.
-fn tcp_connect(host: &str, port: u16) -> Result<TcpStream, String> {
+/// Also the TCP layer of the anonymous FTP fallback transport
+/// ([`super::ftp`]), whose connection semantics are identical.
+pub(crate) fn tcp_connect(host: &str, port: u16) -> Result<TcpStream, String> {
    let addrs: Vec<SocketAddr> = (host, port)
        .to_socket_addrs()
        .map_err(|e| format!("cannot resolve {host}:{port}: {e}"))?
@@ -292,6 +294,39 @@ fn connect_failed_message(
        attempts.len()
    )
 }
+/// Why establishing the SSH session failed.
+///
+/// [`Transport`] failures mean the connection never came up (name
+/// resolution, TCP, banner or key exchange): the target may still be
+/// reachable over another transport, so `pkh put` degrades to the
+/// anonymous FTP queue — dput's default for PPAs ([`super::ftp`]).
+/// [`Refused`] failures mean the server answered but rejected the
+/// upload (host key not accepted, no matching authentication): silently
+/// switching to anonymous FTP would bypass a refusal, so they stay
+/// errors.
+#[derive(Debug)]
+pub enum ConnectFailure {
+    /// The connection itself never came up.
+    Transport(Box<dyn std::error::Error>),
+    /// The server answered but rejected the upload.
+    Refused(Box<dyn std::error::Error>),
+}
+
+impl std::fmt::Display for ConnectFailure {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            ConnectFailure::Transport(e) | ConnectFailure::Refused(e) => write!(f, "{e}"),
+        }
+    }
+}
+
+impl std::error::Error for ConnectFailure {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        match self {
+            ConnectFailure::Transport(e) | ConnectFailure::Refused(e) => Some(e.as_ref()),
+        }
+    }
+}

 /// Connect to `host:port`, verify the server host key and authenticate as
 /// `login`: every ssh-agent identity first, then the configured and default
@@ -303,10 +338,13 @@ pub fn connect(
    login: &str,
    config: &SshConfig,
    prompter: &dyn Prompter,
-) -> Result<Session, Box<dyn std::error::Error>> {
-    let tcp = tcp_connect(host, port)?;
+) -> Result<Session, ConnectFailure> {
+    use ConnectFailure::*;

-    let mut session = Session::new()?;
+    let tcp = tcp_connect(host, port).map_err(|e| Transport(e.into()))?;
+
+    let mut session = Session::new()
+        .map_err(|e| Transport(format!("cannot initialize the SSH session: {e}").into()))?;
    // In blocking mode (the libssh2 default), a call that would block loops
    // in `_libssh2_wait_socket` (via the `BLOCK_ADJUST` macros of
    // session.h in the vendored libssh2-sys sources), which bounds the
@@ -321,14 +359,14 @@ pub fn connect(
    session.set_tcp_stream(tcp);
    session
        .handshake()
-        .map_err(|e| format!("SSH handshake with {host} failed: {e}"))?;
+        .map_err(|e| Transport(format!("SSH handshake with {host} failed: {e}").into()))?;

    let (key, key_type) = session
        .host_key()
-        .ok_or_else(|| format!("{host} offered no host key"))?;
-    verify_host_key(host, port, key, key_type, prompter)?;
+        .ok_or_else(|| Transport(format!("{host} offered no host key").into()))?;
+    verify_host_key(host, port, key, key_type, prompter).map_err(Refused)?;

-    authenticate(&session, host, login, config)?;
+    authenticate(&session, host, login, config).map_err(Refused)?;

    // Only SFTP open/data calls remain on this session: switch from the
    // connection-phase budget to the generous per-call transfer one
@@ -445,6 +445,10 @@ mod imp {
            self.inner.exists(path)
        }

+        fn is_dir(&self, path: &Path) -> io::Result<bool> {
+            self.inner.is_dir(path)
+        }
+
        fn cleanup(&self) -> io::Result<()> {
            self.inner.cleanup()
        }
@@ -11,14 +11,14 @@
 use std::collections::VecDeque;
 use std::fs::{self, File};
 use std::io::Write;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant};

-use crossterm::{cursor, execute, style::Stylize, terminal::Clear, terminal::ClearType};
+use crossterm::style::Stylize;
 use directories::ProjectDirs;
-use indicatif::{MultiProgress, ProgressBar, ProgressStyle};
+use indicatif::{MultiProgress, ProgressBar, ProgressDrawTarget, ProgressStyle};
 use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};

 use crate::context::{LineSink, Stream};
@@ -50,8 +50,11 @@ struct Pipeline {

 /// State shared between [`DebUi`] and its sinks
 struct Shared {
+    multi: MultiProgress,
    top: ProgressBar,
-    pane: ProgressBar,
+    /// The rolling pane bar, created on demand: flows without subprocess
+    /// output (e.g. `pkh put`) never show it at all
+    pane: Mutex<Option<ProgressBar>>,
    state: Mutex<Pipeline>,
    tee: Mutex<Option<File>>,
    log_path: Mutex<PathBuf>,
@@ -81,38 +84,33 @@ impl DebUi {
        let enabled = is_stdout_tty();

        let top = if enabled {
+            // The tty renders a ^C keypress as the two visible characters
+            // "^C"; on a terminal where the cursor sits near the right edge
+            // that wraps to the next row, and the erase at teardown —
+            // anchored to where indicatif last drew — ends up one row off,
+            // leaving the first widget line on screen. Rendering control
+            // characters raw instead (ECHOCTL off) makes the echo an
+            // invisible byte that moves nothing; ECHO itself stays on, so
+            // terminals showing a padlock while input is hidden are not
+            // triggered. Restored by `suspend_shared`.
+            suppress_control_char_echo();
+            multi.set_draw_target(ProgressDrawTarget::stderr());
            let pb = multi.add(ProgressBar::new(0));
            pb.enable_steady_tick(Duration::from_millis(80));
            pb.set_style(spinner_style());
            pb.set_prefix("Building package");
-            pb.set_message("(starting…)");
-            pb
-        } else {
-            ProgressBar::hidden()
-        };
-
-        let pane = if enabled {
-            let pb = multi.add(ProgressBar::new(0));
-            pb.enable_steady_tick(Duration::from_millis(150));
-            // No template margin: multi-line messages are only prefixed by
-            // the template on their first line, which would misalign the
-            // pane; each rendered line carries its own indent instead.
-            pb.set_style(
-                ProgressStyle::default_bar()
-                    .template("{msg}")
-                    .expect("valid template"),
-            );
-            pb.set_message("  │ (starting…)");
            pb
        } else {
            ProgressBar::hidden()
        };
+        let pane = Mutex::new(None);

        let timestamp = chrono::Utc::now().format("%Y%m%dT%H%M%S").to_string();
        let log_path = default_log_path(&timestamp);

        let ui = Self {
            shared: Arc::new(Shared {
+                multi: multi.clone(),
                top,
                pane,
                state: Mutex::new(Pipeline {
@@ -123,7 +121,7 @@ impl DebUi {
                    bar_total: 0,
                }),
                tee: Mutex::new(None),
-                log_path: Mutex::new(log_path.clone()),
+                log_path: Mutex::new(log_path),
                timestamp,
                enabled,
                suspended: AtomicBool::new(false),
@@ -131,8 +129,13 @@ impl DebUi {
            }),
        };

+        // Ctrl+C: the signal wiring lives in the CLI; this view only
+        // registers with `crate::interrupt` how to clear itself and where
+        // the full log lives. The log path is read from the shared state at
+        // interrupt time, so the rename in `open_log` stays visible to the
+        // reporter.
        if ui.shared.enabled {
-            install_sigint_hook(&log_path);
+            set_interrupt_reporter(ui.shared.clone());
        }

        ui
@@ -141,7 +144,7 @@ impl DebUi {
    /// Identify the binary package being built; names the log file and the
    /// status bar
    pub fn set_target(&self, package: &str, version: &str, series: &str, arch: &str) {
-        if self.shared.enabled {
+        if self.active() {
            self.shared.top.set_prefix(format!(
                "Building {package} ({version}) for {series}/{arch}"
            ));
@@ -162,7 +165,6 @@ impl DebUi {
        };
        let _ = fs::rename(&old_path, &log_path);
        *self.shared.log_path.lock().unwrap() = log_path.clone();
-        update_sigint_log_path(&log_path);

        if let Some(dir) = log_path.parent() {
            let _ = fs::create_dir_all(dir);
@@ -195,10 +197,10 @@ impl DebUi {
            st.bar_total = 0;
            st.last_draw = Instant::now();
        }
-        if self.shared.enabled {
+        if self.active() {
            self.shared.top.set_style(spinner_style());
            self.shared.top.set_message(label.to_string());
-            self.shared.pane.set_message("");
+            drop_pane(&self.shared);
        }
    }

@@ -210,20 +212,8 @@ impl DebUi {
    /// Release the widget from the terminal (e.g. before printing
    /// passthrough diagnostics or letting child cleanup commands write to
    /// the terminal); idempotent
-    ///
-    /// Steady ticks are disabled first: otherwise a tick can redraw a frame
-    /// right after the clear, leaving stale copies of the widget on screen.
    fn suspend(&self) {
-        if !self.shared.enabled {
-            return;
-        }
-        if self.shared.suspended.swap(true, Ordering::SeqCst) {
-            return;
-        }
-        self.shared.top.disable_steady_tick();
-        self.shared.pane.disable_steady_tick();
-        self.shared.top.finish_and_clear();
-        self.shared.pane.finish_and_clear();
+        suspend_shared(&self.shared);
    }

    /// Success outcome body: clear the widget and print the artifacts,
@@ -240,9 +230,17 @@ impl DebUi {

    /// Failure outcome body: clear the widget and print a summary (recent
    /// captured errors and the path to the full log)
+    ///
+    /// On a Ctrl+C the interrupt watchdog owns the reporting — its captured
+    /// errors are just the killed children's death throes, and the watchdog
+    /// already points at the full log — so this prints nothing.
    fn failure_summary(&self) {
        self.suspend();

+        if crate::interrupt::interrupted() {
+            return;
+        }
+
        let st = self.shared.state.lock().unwrap();
        if self.shared.enabled && !st.errors.is_empty() {
            eprintln!("Last captured errors:");
@@ -270,7 +268,7 @@ impl DebUi {
 /// widget.
 impl crate::report::BuildView for DebUi {
    fn target(&self, target: BuildTarget<'_>) {
-        if self.shared.enabled {
+        if self.active() {
            self.shared.top.set_prefix(target.display.clone());
        }
        if target.tee_log {
@@ -408,7 +406,44 @@ fn push_line(shared: &Shared, st: &mut Pipeline, kind: Kind, text: String) {
    let now = Instant::now();
    if now.duration_since(st.last_draw) >= REDRAW_INTERVAL {
        st.last_draw = now;
-        shared.pane.set_message(render_pane(&st.lines));
+        if let Some(pane) = ensure_pane(shared) {
+            pane.set_message(render_pane(&st.lines));
+        }
+    }
+}
+
+/// The pane bar, added to the terminal on the first call and reused after
+///
+/// Returns `None` once the widget is suspended: a line racing the suspend
+/// must not re-add a bar the cleanup just cleared.
+fn ensure_pane(shared: &Shared) -> Option<ProgressBar> {
+    let mut pane = shared.pane.lock().unwrap();
+    if let Some(pb) = pane.as_ref() {
+        return Some(pb.clone());
+    }
+    if shared.suspended.load(Ordering::SeqCst) {
+        return None;
+    }
+    let pb = shared.multi.add(ProgressBar::new(0));
+    pb.enable_steady_tick(Duration::from_millis(150));
+    // No template margin: multi-line messages are only prefixed by the
+    // template on their first line, which would misalign the pane; each
+    // rendered line carries its own indent instead.
+    pb.set_style(
+        ProgressStyle::default_bar()
+            .template("{msg}")
+            .expect("valid template"),
+    );
+    *pane = Some(pb.clone());
+    Some(pb)
+}
+
+/// Take the pane bar off the terminal; the next pushed line re-creates it
+fn drop_pane(shared: &Shared) {
+    if let Some(pb) = shared.pane.lock().unwrap().take() {
+        pb.disable_steady_tick();
+        pb.finish_and_clear();
+        shared.multi.remove(&pb);
    }
 }

@@ -506,61 +541,90 @@ fn default_log_path(timestamp: &str) -> PathBuf {
    dir.join(format!("pkh-{timestamp}.log"))
 }

-static SIGINT_LOG_PATH: Mutex<Option<PathBuf>> = Mutex::new(None);
-static SIGINT_INSTALLED: AtomicBool = AtomicBool::new(false);
+/// Register the interrupt reporter: release the widget from the terminal
+/// and return the log-file hint to print below the notice
+///
+/// The CLI watchdog runs this as the first step of the interrupt shutdown,
+/// so the widget disappears the moment Ctrl+C is hit. Registered only for
+/// enabled views: in `--verbose` mode or with piped output there is no
+/// widget and nothing to report.
+fn set_interrupt_reporter(shared: Arc<Shared>) {
+    crate::interrupt::set_reporter(Box::new(move || interrupt_report(&shared)));
+}

-/// Install a best-effort Ctrl+C handler clearing the widget and pointing at
-/// the log file before exiting
-fn install_sigint_hook(log_path: &Path) {
-    update_sigint_log_path(log_path);
-    if SIGINT_INSTALLED.swap(true, Ordering::SeqCst) {
+/// [`suspend_shared`] plus the log-file hint, in teardown order
+///
+/// Testable end to end: the reporter closure is private to the interrupt
+/// watchdog, but the drawing behavior is not.
+fn interrupt_report(shared: &Shared) -> Option<String> {
+    suspend_shared(shared);
+    let log_path = shared.log_path.lock().unwrap().clone();
+    if log_path.exists() {
+        Some(format!("Full log: {}", log_path.display()))
+    } else {
+        None
+    }
+}
+
+/// [`DebUi::suspend`] body, shared with the interrupt reporter
+///
+/// Steady ticks are disabled first: otherwise a tick can redraw a frame
+/// right after the clear, leaving stale copies of the widget on screen.
+/// The tty echo suppressed at view start is restored here, before the
+/// erases: an echo from a keypress landing mid-teardown could not shift the
+/// cursor anymore. The draw target is finally killed: the interrupted flow
+/// keeps emitting log records while the cleanup hooks run, and every one of
+/// them would otherwise make the log bridge repaint the cleared bars from
+/// their cached frames.
+fn suspend_shared(shared: &Shared) {
+    if !shared.enabled {
        return;
    }
+    if shared.suspended.swap(true, Ordering::SeqCst) {
+        return;
+    }
+    restore_tty_echo();
+    shared.top.disable_steady_tick();
+    drop_pane(shared);
+    shared.top.finish_and_clear();
+    shared.multi.set_draw_target(ProgressDrawTarget::hidden());
+}

-    // SAFETY: installing a signal handler; the handler itself is best-effort
-    // (it performs non async-signal-safe operations, acceptable here because
-    // it immediately exits afterwards).
+/// Termios snapshot taken when the echo is suppressed; `Some` only while the
+/// live view is on screen
+static SAVED_TTY_TERMIOS: Mutex<Option<libc::termios>> = Mutex::new(None);
+
+/// Stop the tty from rendering control-character input (^C would show as a
+/// visible two-character "^C") while the live view is up: rendered echoes
+/// move the cursor without indicatif knowing, and the teardown erase ends
+/// up aimed past the widget
+///
+/// ECHO itself stays on — turning it off would trigger terminals'
+/// hidden-input padlock — so the only visible difference is that a ^C
+/// keypress echoes as a raw, cursor-invisible control byte. No-op without a
+/// tty on stdin.
+fn suppress_control_char_echo() {
+    // SAFETY: tcgetattr on stdin with a valid, zero-initialized buffer
+    let mut termios: libc::termios = unsafe { std::mem::zeroed() };
+    // SAFETY: reading the current attributes of stdin
+    if unsafe { libc::tcgetattr(libc::STDIN_FILENO, &mut termios) } != 0 {
+        return;
+    }
+    *SAVED_TTY_TERMIOS.lock().unwrap() = Some(termios);
+    termios.c_lflag &= !libc::ECHOCTL;
+    // SAFETY: applying the modified attributes to stdin
    unsafe {
-        libc::signal(libc::SIGINT, on_sigint as *const () as usize);
+        libc::tcsetattr(libc::STDIN_FILENO, libc::TCSANOW, &termios);
    }
 }

-/// Point the sigint handler at the current log file location
-fn update_sigint_log_path(log_path: &Path) {
-    *SIGINT_LOG_PATH.lock().unwrap() = Some(log_path.to_path_buf());
-}
-
-extern "C" fn on_sigint(_sig: libc::c_int) {
-    // Best-effort cleanup: clear leftover widget lines and show the cursor
-    let _ = execute!(
-        std::io::stdout(),
-        Clear(ClearType::FromCursorDown),
-        cursor::Show
-    );
-    if let Ok(guard) = SIGINT_LOG_PATH.try_lock()
-        && let Some(path) = guard.as_ref()
-    {
-        eprintln!("\nInterrupted — full log: {}", path.display());
-    }
-    // Run the registered cleanup hooks (currently: unmount and remove the
-    // ephemeral build chroot, see `deb::ephemeral::sigint_cleanup_chroot`),
-    // then exit with the conventional 130 status.
-    //
-    // Like the terminal restoration above, this is NOT strictly
-    // async-signal-safe: it locks a mutex, spawns subprocesses and does I/O.
-    // That is a deliberate tradeoff, no worse than the rest of this handler:
-    // exiting immediately would skip all destructors and leak the chroot
-    // together with its bind-mounted /proc and overlay mounts. The hooks are
-    // self-contained (they only touch stored paths and spawn umount/rm
-    // directly), so they cannot deadlock on a lock the interrupted thread
-    // might have held; the hook registry itself is only ever taken with
-    // try_lock plus a bounded retry for the same reason. Note that SIGINT
-    // stays blocked for the duration of the handler, so a second Ctrl-C will
-    // not interrupt a slow cleanup — send SIGTERM/SIGKILL if it ever hangs.
-    crate::deb::ephemeral::run_cleanup_hooks();
-    // SAFETY: raw exit bypassing destructors, intended in a signal handler
-    unsafe {
-        libc::_exit(130);
+/// Restore the tty attributes saved by [`suppress_tty_echo`]
+fn restore_tty_echo() {
+    if let Some(termios) = SAVED_TTY_TERMIOS.lock().unwrap().take() {
+        // SAFETY: re-applying the snapshot taken at view start
+        unsafe {
+            libc::tcsetattr(libc::STDIN_FILENO, libc::TCSANOW, &termios);
+        }
    }
 }

@@ -638,6 +702,79 @@ mod tests {
        assert!(rendered.contains("a line that would overflow a narrow pane"));
    }

+    /// A fresh view has no pane at all: flows without subprocess output
+    /// (`pkh put`) must not render anything until a line arrives, and a
+    /// dropped or suspended pane stays gone
+    #[test]
+    fn pane_is_created_lazily_and_dropped_cleanly() {
+        let multi = MultiProgress::new();
+        let shared = Shared {
+            multi: multi.clone(),
+            top: multi.add(ProgressBar::new(0)),
+            pane: Mutex::new(None),
+            state: Mutex::new(Pipeline {
+                classifier: Box::new(GenericClassifier::new()),
+                lines: VecDeque::new(),
+                errors: Vec::new(),
+                last_draw: Instant::now(),
+                bar_total: 0,
+            }),
+            tee: Mutex::new(None),
+            log_path: Mutex::new(std::env::temp_dir().join("pkh-pane-test.log")),
+            timestamp: String::new(),
+            enabled: true,
+            suspended: AtomicBool::new(false),
+            started: Instant::now(),
+        };
+
+        assert!(shared.pane.lock().unwrap().is_none());
+
+        ensure_pane(&shared).unwrap();
+        assert!(shared.pane.lock().unwrap().is_some());
+        // Later lines hit the stored bar instead of stacking another one
+        ensure_pane(&shared).unwrap();
+        assert!(shared.pane.lock().unwrap().is_some());
+
+        drop_pane(&shared);
+        assert!(shared.pane.lock().unwrap().is_none());
+
+        // A line racing the suspend must not re-add the cleared bar
+        shared.suspended.store(true, Ordering::SeqCst);
+        assert!(ensure_pane(&shared).is_none());
+    }
+
+    /// The interrupt report kills the shared draw target: during the cleanup
+    /// hooks the interrupted flow keeps emitting log records, and every one
+    /// of them would otherwise make the log bridge repaint the bars from
+    /// their cached frames — resurrecting the widget that was just cleared.
+    #[test]
+    fn interrupt_report_disables_further_redraws() {
+        let multi = MultiProgress::new();
+        let shared = Shared {
+            multi: multi.clone(),
+            top: multi.add(ProgressBar::new(0)),
+            pane: Mutex::new(None),
+            state: Mutex::new(Pipeline {
+                classifier: Box::new(GenericClassifier::new()),
+                lines: VecDeque::new(),
+                errors: Vec::new(),
+                last_draw: Instant::now(),
+                bar_total: 0,
+            }),
+            tee: Mutex::new(None),
+            log_path: Mutex::new(std::env::temp_dir().join("pkh-interrupt-report-test.log")),
+            timestamp: String::new(),
+            enabled: true,
+            suspended: AtomicBool::new(false),
+            started: Instant::now(),
+        };
+
+        interrupt_report(&shared);
+
+        assert!(shared.suspended.load(Ordering::SeqCst));
+        assert!(shared.multi.is_hidden());
+    }
+
    /// Best-effort ANSI escape stripper, enough for the assertions above
    fn strip_ansi(line: &str) -> String {
        let mut out = String::new();
Author	SHA1	Message	Date
vhaudiquet	4b52f8e9e9	docs: add crates.io installation instructions CI / build (push) Successful in 3m1s Details CI / test (push) Skipped Details CI / publish (push) Skipped Details CI / snap (push) In progress Details pkh v0.1.0 is published to crates.io, so cargo install pkh is now the primary installation path; building from source stays as the alternative. Drop the 'no distribution channel' notice.	2026-09-24 22:19:24 +02:00
vhaudiquet	6df490cf9a	ci: install build-essential in the publish job CI / build (push) Successful in 3m3s Details CI / test (push) Skipped Details CI / snap (push) Successful in 6m9s Details CI / publish (push) Successful in 2m11s Details cargo publish verifies the packaged tarball with a full build before uploading, and that build needs a C linker for build-script crates (proc-macro2 was the first to fail). The job's container setup step omitted build-essential, unlike the build and test jobs, so the verification failed with 'linker cc not found' on the v0.1.0 tag.	2026-09-24 21:41:15 +02:00
vhaudiquet	f5b7704647	data: add an agent SKILL.md teaching pkh usage CI / build (push) Successful in 3m1s Details CI / test (push) Skipped Details CI / snap (push) Successful in 6m1s Details CI / publish (push) Failing after 53s Details Add data/skill/SKILL.md in the agent-skills open format: a skill directory that agents (Claude Code, Codex, OpenCode, ...) discover and load on demand. It documents the shared option surface, the pull, chlog, build, deb, lint, put workflow and the flags that keep runs non-interactive; the command reference was generated from the live --help output of every subcommand. It lives under data/ so a later module can embed it and ship it with the binary, for example a 'pkh skill' installer writing it into the agent skill directories.	2026-09-22 23:55:56 +02:00
vhaudiquet	4c1edc7dcd	docs: update example gif CI / build (push) Successful in 3m13s Details CI / test (push) Skipped Details CI / publish (push) Skipped Details CI / snap (push) Successful in 6m7s Details	2026-09-22 21:35:35 +02:00
vhaudiquet	9a66f8f7df	deb: retry the interrupt chroot removal while children die off dpkg defers SIGINT until it reaches a safe state, so it can still be writing into the chroot when the watchdog's rm -rf starts racing through it, failing with "directory not empty" and leaving the tree half-removed. Retry the removal for a few seconds while the interrupted children finish dying off; a genuinely stuck tree still ends in the pkh prune message.	2026-09-22 19:57:01 +02:00
vhaudiquet	7a6337e1cb	deb: build the tree the caller pointed at before the name search CI / build (push) Successful in 3m16s Details CI / test (push) Skipped Details CI / publish (push) Skipped Details CI / snap (push) Failing after 7m17s Details build_binary_package stages the parent of the requested cwd, then re-derived the package directory inside the staging area from package/version name patterns plus the calling process's working directory. That only works by accident for interactive users sitting in the package directory: an embedded caller whose tree lives at <job>/tree matches no pattern, and the process cwd means nothing to a library consumer — the bc build above failed here even though the tree was staged correctly. The pointed-at tree is authoritative anyway: its changelog defined the package, version and series for this build. Resolve its staged copy outright when it carries a debian/ tree, keep the pattern search (with the quirks overrides) as a fallback, and hand the resolved directory to local::build instead of searching again.	2026-09-22 14:31:25 +02:00
vhaudiquet	9186bbbe51	deb: classify the staged listing through the context The fallback listing of find_package_directory called Path::is_dir on entries returned by list_files — a host-side stat. For an unshare context (every local build) those paths are rooted inside the chroot and do not exist at the same host path, so every entry came out a non-directory, the 'Found directories' list silently stayed empty and the failure degraded to the list-less 'Could not find package directory' variant, hiding the actual layout (seen building bc from an ubuntu/devel checkout whose staged tree was named 'tree'). Classify entries through the new ContextDriver::is_dir, and log every entry instead of only those matching the broken host stat.	2026-09-22 14:31:10 +02:00
vhaudiquet	681fa3d687	context: add ContextDriver::is_dir list_files returns context-relative paths (rooted inside the chroot for an unshare context, on the remote for ssh): whether an entry is a directory can only be decided through the context, never with a host-side stat. Give every driver a proper is_dir rather than approximating it with exists, so callers can keep directories and files apart — the deb package-directory search lists directories only.	2026-09-22 14:29:12 +02:00
vhaudiquet	cc5bbd2297	chlog: drop a trailing buildN before appending ubuntu1 An Ubuntu upload of a package sitting at X-2build1 produced X-2build1ubuntu1: the blind append misrepresents the lineage and, sorting below the proper X-2ubuntu1, could never supersede it. A real change on top of a rebuild replaces the marker instead, so the trailing buildN is now stripped before the ubuntu counter is appended or incremented: X-2build1 becomes X-2ubuntu1, X-2ubuntu1build1 becomes X-2ubuntu2.	2026-09-22 13:00:40 +02:00
vhaudiquet	5a1c1672cd	cli: intercept Ctrl+C for deb, build and put The SIGINT handler only records the interruption and wakes a watchdog through a self-pipe (async-signal-safe); the watchdog runs the whole shutdown in thread context — the live view's reporter first, then the notice and the log hint, then the cleanup hooks, then exit 130. Flows park in wait_for_shutdown instead of racing it with their own exit, and an end-to-end test drives the sequence by re-spawning the test binary and raising SIGINT at itself.	2026-09-22 10:44:05 +02:00
vhaudiquet	adde0ee977	deb,ui: tear the live view down through the interrupt core The ephemeral guard registers its chroot removal as an interrupt cleanup hook and, once interrupted, stands down from its own teardown so the two cannot race umount/rm; bootstrap bails out of tarball extraction and the lockfile wait, keeping the hook registered on the bootstrap error path so the watchdog can remove the partial tree. The live view registers an interrupt reporter that suspends the widget and returns the log-file hint, silences the tty rendering of the ^C keypress (the echoed "^C" can wrap near the right edge and shift the teardown erase by a row, leaving the first widget line on screen) and kills the shared draw target so late log records cannot repaint the cleared bars. Failure summaries stay quiet when interrupted: the captured errors are just the killed children's death throes, and the dose-builddebcheck diagnosis is skipped for a dependency failure the user interrupted themselves.	2026-09-22 10:43:58 +02:00
vhaudiquet	84405a6762	interrupt: add the passive interrupt core The library holds only the state its own types need when a Ctrl+C arrives: the interrupted flag flows check to stand down, the cleanup hook registry for resources that must not outlive the process (the ephemeral build chroot), and the live view's reporter slot. The signal handling itself is CLI wiring and lands separately: nothing here installs handlers, prints or exits, so a library consumer embedding these types keeps its own signal disposition.	2026-09-22 10:43:49 +02:00
vhaudiquet	8250a0e3b1	ci: publish the crate to crates.io on a v* tag CI / build (push) Successful in 3m15s Details CI / test (push) Skipped Details CI / publish (push) Skipped Details CI / snap (push) Failing after 7m34s Details Trusted publishing is GitHub-Actions-only, so authentication goes through a crates.io API token stored as the CARGO_REGISTRY_TOKEN secret, scoped to the pkh crate. The job gates on the build job and fails loudly when the tag does not match the version in Cargo.toml, since cargo publish ships the declared version regardless of the tag name.	2026-09-21 23:14:27 +02:00
vhaudiquet	edfd7ed5ed	snap: declare the dual license and ship the license texts CI / build (push) Successful in 3m11s Details CI / test (push) Skipped Details CI / snap (push) Failing after 7m18s Details The store listing carries the crate's MIT OR GPL-2.0-only expression, and both texts ride along in the snap under /usr/share/doc/pkh: the MIT grant requires the notice to accompany copies, and GPL-2 requires the license text with distribution.	2026-09-21 22:41:09 +02:00
vhaudiquet	6545d327e4	docs: add example gif CI / build (push) Successful in 3m13s Details CI / test (push) Skipped Details CI / snap (push) Failing after 7m23s Details	2026-09-21 21:33:52 +02:00
vhaudiquet	b118a54bff	deps: describe the crate and dual-license it MIT or GPL-2.0-only CI / build (push) Successful in 3m2s Details CI / test (push) Skipped Details CI / snap (push) Failing after 7m15s Details Publishing to crates.io requires a description and a license; the repository and readme give the crates.io page the right links. The license texts ship as LICENSE-MIT and LICENSE-GPL. Dual licensing is valid while no lintian-derived code is in tree: shelling out to lintian is mere aggregation. When derived lint collections are implemented they must land in a separate GPL-2-only crate, since their copyright belongs to lintian's authors and cannot carry an MIT grant; the core crate stays dual.	2026-09-21 20:46:46 +02:00
vhaudiquet	43f8a9e275	docs: remove roadmap, consolidate README CI / build (push) Successful in 3m2s Details CI / test (push) Skipped Details CI / snap (push) Successful in 6m9s Details	2026-09-21 18:20:26 +02:00
vhaudiquet	ff41edbd47	ui: create the rolling pane lazily, on its first line DebUi seeded both widgets with a "(starting...)" placeholder, replaced as soon as real content arrived during a build. pkh put reports through the same view but runs no subprocess, so nothing ever fed the pane: its seed line stayed on screen for the whole upload, stacked under the per-file byte progress. Drop the seeds and add the pane bar to the terminal only when the first classified line arrives; a phase change (and the final suspend) takes it off again. Flows without subprocess output now render the status bar alone.	2026-09-21 15:20:17 +02:00
vhaudiquet	9e0b6a37a6	put: degrade to the anonymous FTP queue when the SSH transport fails CI / test (push) Skipped Details CI / build (push) Successful in 3m0s Details CI / snap (push) Successful in 6m6s Details pkh put only spoke SFTP to the PPA queue, so a failure of the SSH transport itself (TCP, banner exchange) failed the upload even though dput happily pushes the same files: its plain ppa: profile goes over the anonymous FTP queue of ppa.launchpad.net, the same destination over another port. Classify the SSH connection failures: Transport (the connection never came up: resolution, TCP, banner or key exchange) degrades to that FTP queue — the upload order (payload first, .changes last), the reverse-order DELE cleanup of a failed upload and the per-chunk progress reporting all mirror the SFTP path, sharing cleanup_list. Refused failures (host key not accepted, no matching authentication) stay errors: silently switching transport would bypass the refusal. The FTP client is suppaftp's blocking stream, with the time bounds it does not carry by itself: the control channel's reads and writes, the data channel's writes and connect (through a custom passive stream builder), and the NAT workaround for PASV replies announcing an unroutable address. The queue endpoints (host, port) join data/launchpad.yml next to the SFTP ones, and the FTP transport is covered by unit tests against an in-process fake queue plus a live control-channel handshake with the real server (ignored, network).	2026-09-21 14:34:04 +02:00
vhaudiquet	ac19fd9d65	deps: add suppaftp and parking_lot suppaftp 12 is the FTP client behind the put FTP fallback transport: the maintained continuation of rust-ftp (4.2M downloads, releases this month), used with its default features only — a plain blocking FTP stream, no TLS, no async. It brings just lazy-regex into the tree; chrono is shared. parking_lot replaces std sync mutex unwrapping in test code, per the project rule.	2026-09-21 14:34:04 +02:00
vhaudiquet	02e1f739c3	chlog,cli,docs: offer suite-aliased series in the chlog selector The chlog series selector only appeared when the changelog's current distribution resolved to a known series; a Debian package targeting 'unstable' (or 'stable', 'testing', ...) fell through to keeping the current series, silently, with no menu. Resolve the changelog distribution through the suite aliases first (unstable identifies the same series as sid, which resolves to the Debian series list). The selector offers an aliased series as '<suite> (<series>)' — 'unstable (sid)' — preselected, but selects the suite name: what a changelog distribution field expects, instead of the codename. Every other label and free-typed input selects itself, unchanged. Reflect the selector in the README roadmap checklist.	2026-09-21 11:52:39 +02:00
vhaudiquet	8c6f6f4028	distro_info: match changelog suite names with their series Debian packages conventionally target 'unstable' in their debian/changelog distribution field, but the series data (the distro-info CSVs) only knows codenames: the suite is the alias 'unstable' of the series 'sid', a mapping the debian-distro-info tool resolves internally without exposing it in its data. Add a per-dist suite_aliases reference-data key (debian: unstable -> sid), with two helpers on top: resolve_suite_alias, identifying a changelog suite name with its series codename and the dist that codename belongs to, and series_suite_alias, the inverse direction. The two names identify the same series.	2026-09-21 11:52:39 +02:00
vhaudiquet	37e0b5c978	pull: fetch every component tarball of multi-orig packages Sources listed with "3.0 (quilt)" extra components (node-jest, php-, ...) carry one tarball per bundled module next to the main orig, named <package>_<uver>.orig-<component>.tar.<ext>. fetch_orig_tarball picked the single file matching ".orig.tar." — which cannot even match the component naming — so a git pull only fetched the main orig. The later dpkg-source -b quilt verification then failed with "can't find file to patch" on the first patch touching a component directory. Select the files with the existing build::changes::is_orig_tarball helper (mirroring dpkg's \.orig(-.+)?\.tar\. strip pattern) and fetch all of them, pristine-tar checkout first with a checksummed archive download fallback, per tarball. The end-to-end test now asserts every stanza-listed orig lands in the package dir instead of just any .orig.tar.* file, and gains a node-jest (trixie, 24 components) regression case. Verified live: pkh pull node-jest -d debian fetches all 15 origs of the sid ds7 repack, and dpkg-source -b builds the debian.tar.xz and dsc without touching the series.	2026-09-21 11:28:55 +02:00
vhaudiquet	6c0b200241	deps: commit the Cargo.lock A binary crate should pin its dependency graph: without the lockfile in git, source and snap builds float transitive versions, so a 0.1.0 artifact rebuilt later would not be the same binary.	2026-09-21 01:36:40 +02:00
vhaudiquet	4edf331444	docs: refresh command list, workflow example, roadmap and install The command block is now the actual pkh --help output (new, lint and prune were missing). The example workflow used pkh commit, a subcommand that does not exist; commits go through git until chlog/pkh commit land. The roadmap now reflects what is implemented (pull -v, deb --mode local, lint, prune, new) and an installation section documents the source build and its system dependencies.	2026-09-21 01:36:39 +02:00
vhaudiquet	fa121f08ec	cli: expose --version on the root command The flag was disabled in the initial commit, leaving the binary with no way to report its number — wrong for a release. clap scopes the automatic version flag to the root command (-V/--version), so the per-subcommand -v target-version options of pull and chlog are unaffected.	2026-09-21 01:36:39 +02:00
vhaudiquet	ac83a939e3	snap: confine classically and carry the full packaging toolchain CI / build (push) Successful in 2m50s Details CI / test (push) Skipped Details CI / snap (push) Successful in 5m55s Details A devmode snap is a smoke test, not a distribution channel: pkh drives the whole host packaging stack (unshare chroots, overlay mounts, dpkg/quilt/lintian across arbitrary paths), which only classic confinement can express. The snap now bundles every host-side tool pkh execs (git, gnupg, dpkg-dev, quilt, pristine-tar, mmdebstrap, lintian, fakeroot, util-linux, mount, schroot, openssh, tar/xz/bzip2), with apt and dpkg deliberately left to the host: a core24 apt managing a newer host's package database is exactly the skew classic snaps must avoid. Tools running only inside the build chroot stay out; pkh provisions those itself. Release metadata comes from Cargo.toml instead of the git hash, and grade is stable, so a build of any commit packs as the declared version. Classic-mode correctness: noble's mount/umount are staged from the split mount package, fakeroot is exposed via symlink since update-alternatives does not run at staging, and every bundled ELF is patched to the core24 loader with a DT_RPATH resolving the base and $ORIGIN. Without this the host loader would pin the snap to hosts with a matching glibc, and the host ld.so.cache would mix host libraries with base ones.	2026-09-21 01:22:10 +02:00
vhaudiquet	1145ca55eb	docs: drop the pkh context roadmap items The subcommand is gone from the CLI; context survives only as the internal build backend, so there is no user-facing surface left to track on the roadmap.	2026-09-21 00:10:45 +02:00
vhaudiquet	b99f945b98	cli: remove the pkh context subcommand The context management interface never worked reliably, and keeping it exposed presents a feature that is not ready. Contexts remain in the library as the execution backend for pkh deb (unshare chroots and friends); only the CLI surface goes.	2026-09-21 00:10:45 +02:00