deb: default to ephemeral context with local builds

src/deb/cross.rs

@@ -1,149 +1,6 @@
 use crate::context;
-use crate::context::{Context, ContextConfig};
-use directories::ProjectDirs;
 use std::collections::HashMap;
 use std::error::Error;
-use std::fs;
-use std::path::{Path, PathBuf};
-use tar::Archive;
-use xz2::read::XzDecoder;
-
-pub struct EphemeralContextGuard {
-    previous_context: String,
-    chroot_path: PathBuf,
-}
-
-impl EphemeralContextGuard {
-    pub fn new(series: &str) -> Result<Self, Box<dyn Error>> {
-        let current_context_name = context::manager().current_name();
-
-        // Create a temporary directory for the chroot
-        let chroot_path_str = context::current().create_temp_dir()?;
-        let chroot_path = PathBuf::from(chroot_path_str);
-
-        log::debug!(
-            "Creating new chroot for {} at {}...",
-            series,
-            chroot_path.display()
-        );
-
-        // Download and extract the chroot tarball
-        Self::download_and_extract_chroot(series, &chroot_path)?;
-
-        // Switch to an ephemeral context to build the package in the chroot
-        context::manager().set_current_ephemeral(Context::new(ContextConfig::Unshare {
-            path: chroot_path.to_string_lossy().to_string(),
-            parent: Some(current_context_name.clone()),
-        }));
-
-        Ok(Self {
-            previous_context: current_context_name,
-            chroot_path,
-        })
-    }
-
-    fn download_and_extract_chroot(
-        series: &str,
-        chroot_path: &PathBuf,
-    ) -> Result<(), Box<dyn Error>> {
-        // Get project directories for caching
-        let proj_dirs = ProjectDirs::from("com", "pkh", "pkh")
-            .ok_or("Could not determine project directories")?;
-        let cache_dir = proj_dirs.cache_dir();
-        fs::create_dir_all(cache_dir)?;
-
-        // Create tarball filename based on series
-        let tarball_filename = format!("{}-buildd.tar.xz", series);
-        let tarball_path = cache_dir.join(&tarball_filename);
-
-        // Download tarball if it doesn't exist
-        if !tarball_path.exists() {
-            log::debug!("Downloading chroot tarball for {}...", series);
-            Self::download_chroot_tarball(series, &tarball_path)?;
-        } else {
-            log::debug!("Using cached chroot tarball for {}", series);
-        }
-
-        // Extract tarball to chroot directory
-        log::debug!("Extracting chroot tarball to {}...", chroot_path.display());
-        Self::extract_tarball(&tarball_path, chroot_path)?;
-
-        Ok(())
-    }
-
-    fn download_chroot_tarball(series: &str, tarball_path: &Path) -> Result<(), Box<dyn Error>> {
-        // Use mmdebstrap to download the tarball to the cache directory
-        let status = context::current()
-            .command("mmdebstrap")
-            .arg("--variant=buildd")
-            .arg("--mode=unshare")
-            .arg("--format=tar")
-            .arg(series)
-            .arg(tarball_path.to_string_lossy().to_string())
-            .status()?;
-
-        if !status.success() {
-            return Err(format!("Failed to download chroot tarball for series {}", series).into());
-        }
-
-        Ok(())
-    }
-
-    fn extract_tarball(
-        tarball_path: &PathBuf,
-        chroot_path: &PathBuf,
-    ) -> Result<(), Box<dyn Error>> {
-        // Create the chroot directory
-        fs::create_dir_all(chroot_path)?;
-
-        // Open the tarball file
-        let tarball_file = std::fs::File::open(tarball_path)?;
-        let xz_decoder = XzDecoder::new(tarball_file);
-        let mut archive = Archive::new(xz_decoder);
-
-        // Extract all files to the chroot directory
-        archive.unpack(chroot_path)?;
-
-        Ok(())
-    }
-}
-
-impl Drop for EphemeralContextGuard {
-    fn drop(&mut self) {
-        log::debug!("Cleaning up ephemeral context...");
-        // Reset to normal context
-        if let Err(e) = context::manager().set_current(&self.previous_context) {
-            log::error!("Failed to restore context {}: {}", self.previous_context, e);
-        }
-
-        // Remove chroot directory
-        // We use the restored context to execute the cleanup command
-        let result = context::current()
-            .command("sudo")
-            .arg("rm")
-            .arg("-rf")
-            .arg(&self.chroot_path)
-            .status();
-
-        match result {
-            Ok(status) => {
-                if !status.success() {
-                    log::error!(
-                        "Failed to remove chroot directory {}",
-                        self.chroot_path.display()
-                    );
-                }
-            }
-            Err(e) => {
-                log::error!(
-                    "Failed to execute cleanup command for {}: {}",
-                    self.chroot_path.display(),
-                    e
-                );
-            }
-        }
-    }
-}
 
 /// Set environment variables for cross-compilation
 pub fn setup_environment(

src/deb/ephemeral.rs

@@ -0,0 +1,148 @@
+use crate::context;
+use crate::context::{Context, ContextConfig};
+use directories::ProjectDirs;
+use std::error::Error;
+use std::fs;
+use std::path::{Path, PathBuf};
+use tar::Archive;
+use xz2::read::XzDecoder;
+
+/// An ephemeral unshare context guard that creates and manages a temporary chroot environment
+/// for building packages with unshare permissions.
+pub struct EphemeralContextGuard {
+    previous_context: String,
+    chroot_path: PathBuf,
+}
+
+impl EphemeralContextGuard {
+    /// Create a new ephemeral unshare context for the specified series
+    pub fn new(series: &str) -> Result<Self, Box<dyn Error>> {
+        let current_context_name = context::manager().current_name();
+
+        // Create a temporary directory for the chroot
+        let chroot_path_str = context::current().create_temp_dir()?;
+        let chroot_path = PathBuf::from(chroot_path_str);
+
+        log::debug!(
+            "Creating new chroot for {} at {}...",
+            series,
+            chroot_path.display()
+        );
+
+        // Download and extract the chroot tarball
+        Self::download_and_extract_chroot(series, &chroot_path)?;
+
+        // Switch to an ephemeral context to build the package in the chroot
+        context::manager().set_current_ephemeral(Context::new(ContextConfig::Unshare {
+            path: chroot_path.to_string_lossy().to_string(),
+            parent: Some(current_context_name.clone()),
+        }));
+
+        Ok(Self {
+            previous_context: current_context_name,
+            chroot_path,
+        })
+    }
+
+    fn download_and_extract_chroot(
+        series: &str,
+        chroot_path: &PathBuf,
+    ) -> Result<(), Box<dyn Error>> {
+        // Get project directories for caching
+        let proj_dirs = ProjectDirs::from("com", "pkh", "pkh")
+            .ok_or("Could not determine project directories")?;
+        let cache_dir = proj_dirs.cache_dir();
+        fs::create_dir_all(cache_dir)?;
+
+        // Create tarball filename based on series
+        let tarball_filename = format!("{}-buildd.tar.xz", series);
+        let tarball_path = cache_dir.join(&tarball_filename);
+
+        // Download tarball if it doesn't exist
+        if !tarball_path.exists() {
+            log::debug!("Downloading chroot tarball for {}...", series);
+            Self::download_chroot_tarball(series, &tarball_path)?;
+        } else {
+            log::debug!("Using cached chroot tarball for {}", series);
+        }
+
+        // Extract tarball to chroot directory
+        log::debug!("Extracting chroot tarball to {}...", chroot_path.display());
+        Self::extract_tarball(&tarball_path, chroot_path)?;
+
+        Ok(())
+    }
+
+    fn download_chroot_tarball(series: &str, tarball_path: &Path) -> Result<(), Box<dyn Error>> {
+        // Use mmdebstrap to download the tarball to the cache directory
+        let status = context::current()
+            .command("mmdebstrap")
+            .arg("--variant=buildd")
+            .arg("--mode=unshare")
+            .arg("--format=tar")
+            .arg(series)
+            .arg(tarball_path.to_string_lossy().to_string())
+            .status()?;
+
+        if !status.success() {
+            return Err(format!("Failed to download chroot tarball for series {}", series).into());
+        }
+
+        Ok(())
+    }
+
+    fn extract_tarball(
+        tarball_path: &PathBuf,
+        chroot_path: &PathBuf,
+    ) -> Result<(), Box<dyn Error>> {
+        // Create the chroot directory
+        fs::create_dir_all(chroot_path)?;
+
+        // Open the tarball file
+        let tarball_file = std::fs::File::open(tarball_path)?;
+        let xz_decoder = XzDecoder::new(tarball_file);
+        let mut archive = Archive::new(xz_decoder);
+
+        // Extract all files to the chroot directory
+        archive.unpack(chroot_path)?;
+
+        Ok(())
+    }
+}
+
+impl Drop for EphemeralContextGuard {
+    fn drop(&mut self) {
+        log::debug!("Cleaning up ephemeral context...");
+        // Reset to normal context
+        if let Err(e) = context::manager().set_current(&self.previous_context) {
+            log::error!("Failed to restore context {}: {}", self.previous_context, e);
+        }
+
+        // Remove chroot directory
+        // We use the restored context to execute the cleanup command
+        let result = context::current()
+            .command("sudo")
+            .arg("rm")
+            .arg("-rf")
+            .arg(&self.chroot_path)
+            .status();
+
+        match result {
+            Ok(status) => {
+                if !status.success() {
+                    log::error!(
+                        "Failed to remove chroot directory {}",
+                        self.chroot_path.display()
+                    );
+                }
+            }
+            Err(e) => {
+                log::error!(
+                    "Failed to execute cleanup command for {}: {}",
+                    self.chroot_path.display(),
+                    e
+                );
+            }
+        }
+    }
+}

src/deb/mod.rs

@@ -1,4 +1,5 @@
 mod cross;
+mod ephemeral;
 mod local;
 mod sbuild;
 
@@ -42,21 +43,13 @@ pub fn build_binary_package(
     let mode = if let Some(m) = mode {
         m
     } else {
-        // For cross-compilation, we use local with an ephemeral context
+        // By default, we use local build
-        // created by the cross-compilation handler (see below)
+        BuildMode::Local
-        if cross {
-            BuildMode::Local
-        } else {
-            // By default, we use sbuild
-            BuildMode::Sbuild
-        }
     };
 
-    // Specific case: native cross-compilation, we don't allow that
+    // Create an ephemeral unshare context for all Local builds
-    // instead this wraps to an automatic unshare chroot
+    let _guard = if mode == BuildMode::Local {
-    // using an ephemeral context
+        Some(ephemeral::EphemeralContextGuard::new(series)?)
-    let _guard = if cross && mode == BuildMode::Local {
-        Some(cross::EphemeralContextGuard::new(series)?)
     } else {
         None
     };