data,apt/release,distro_info,new: replace lazy_static with LazyLock

Unify the lazily-initialized statics on std::sync::LazyLock, which the
newer code already uses: the embed_data! macro expands to a plain
static now, which also removes the visibility-forwarding workaround the
lazy_static! matcher forced on it (the @expand arm wrapping vis in
parentheses), and the 'static ref' spelling is kept at the call sites.
distro_info's HTTP client, the apt keyring cache and the new-template
registry follow the same pattern.

src/apt/release.rs

@@ -45,7 +45,6 @@
 //! keyserver responses are armored) are dearmored in-process, so no `gpg`
 //! binary is needed.
 
-use lazy_static::lazy_static;
 use log::{debug, warn};
 use serde::Deserialize;
 use std::collections::HashMap;
@@ -53,6 +52,7 @@ use std::error::Error;
 use std::fmt;
 use std::path::Path;
 use std::path::PathBuf;
+use std::sync::LazyLock;
 use std::sync::Mutex;
 use std::sync::PoisonError;
 
@@ -793,11 +793,10 @@ async fn fetch_optional(url: &str) -> Option<Vec<u8>> {
     None
 }
 
-lazy_static! {
-    /// Downloaded keyrings, keyed by URL: keyrings are small but would
-    /// otherwise be re-downloaded once per series/pocket lookup
-    static ref KEYRING_CACHE: Mutex<HashMap<String, Vec<u8>>> = Mutex::new(HashMap::new());
-}
+/// Downloaded keyrings, keyed by URL: keyrings are small but would
+/// otherwise be re-downloaded once per series/pocket lookup
+static KEYRING_CACHE: LazyLock<Mutex<HashMap<String, Vec<u8>>>> =
+    LazyLock::new(|| Mutex::new(HashMap::new()));
 
 /// Read the keyring cache, ignoring poisoning (the map is only corrupted on
 /// panics, in which case a fresh map is just as good)

src/data.rs

@@ -13,7 +13,7 @@
 //! data/quirks.yml) through the [`embed_data!`] macro below, so data
 //! and its accessors stay together and a diff touching one domain cannot
 //! half-touch another. The macro embeds the file at compile time and
-//! parses it once into a `lazy_static` on first use; since the data ships
+//! parses it once into a [`LazyLock`] on first use; since the data ships
 //! inside the binary, a parse failure is a build-time bug that cannot be
 //! recovered from at runtime, and the macro panics on it.
 //!
@@ -30,8 +30,9 @@
 /// the invoking source file (`"../data/distro_info.yml"` from
 /// `src/distro_info.rs`, `"../../data/host_keys.yml"` from
 /// `src/put/ssh.rs`, ...), and expands to the house `include_str!` →
-/// `lazy_static` → parse pattern — only the embed+parse boilerplate is
-/// generated.
+/// parse-on-first-use pattern — only the embed+parse boilerplate is
+/// generated. The `static ref` spelling is kept from the macro's
+/// `lazy_static!` ancestry; it expands to a plain `LazyLock` static.
 ///
 /// ```ignore
 /// embed_data! {
@@ -39,31 +40,19 @@
 /// }
 /// ```
 macro_rules! embed_data {
-    // Internal arm: the visibility arrives wrapped in parentheses (empty for
-    // private statics) because `lazy_static!` only re-matches literal
-    // `pub`/`pub(...)` token sequences, not an opaque forwarded `vis`.
-    (@expand ($($vis:tt)*) static ref $name:ident : $ty:ty = $path:literal) => {
-        lazy_static::lazy_static! {
-            // The YAML is include_str!'d at compile time and statically
-            // valid; if it ever failed to parse it would be a build-time bug
-            // that cannot be recovered from at runtime, so panicking here is
-            // acceptable.
-            $($vis)* static ref $name: $ty = serde_yaml::from_str(include_str!($path))
+    ($vis:vis static ref $name:ident : $ty:ty = $path:literal) => {
+        // The YAML is include_str!'d at compile time and statically
+        // valid; if it ever failed to parse it would be a build-time bug
+        // that cannot be recovered from at runtime, so panicking here is
+        // acceptable.
+        $vis static $name: ::std::sync::LazyLock<$ty> = ::std::sync::LazyLock::new(|| {
+            serde_yaml::from_str(include_str!($path))
                 .expect(concat!(
                     "built-in ",
                     $path,
                     " data is statically valid and must parse"
-                ));
-        }
-    };
-    (static ref $name:ident : $ty:ty = $path:literal) => {
-        $crate::data::embed_data!(@expand () static ref $name : $ty = $path);
-    };
-    (pub static ref $name:ident : $ty:ty = $path:literal) => {
-        $crate::data::embed_data!(@expand (pub) static ref $name : $ty = $path);
-    };
-    (pub ($($vis:tt)+) static ref $name:ident : $ty:ty = $path:literal) => {
-        $crate::data::embed_data!(@expand (pub ($($vis)+)) static ref $name : $ty = $path);
+                ))
+        });
     };
 }
 

src/distro_info.rs

@@ -1,10 +1,10 @@
 use crate::data::embed_data;
 use chrono::NaiveDate;
-use lazy_static::lazy_static;
 use serde::Deserialize;
 use std::collections::HashMap;
 use std::error::Error;
 use std::path::Path;
+use std::sync::LazyLock;
 use std::time::Duration;
 
 #[derive(Debug, Clone)]
@@ -104,20 +104,20 @@ embed_data! {
     static ref DATA: Data = "../data/distro_info.yml"
 }
 
-lazy_static! {
-    // Shared HTTP client used for all outgoing plain requests: timeouts keep
-    // a hanging remote (connect or transfer) from stalling pkh indefinitely.
-    // The short pool idle timeout and TCP keepalive avoid reusing keep-alive
-    // connections that the remote closed in the meantime, which surfaces as
-    // spurious 'error sending request' failures on busy mirrors/CDNs.
-    static ref HTTP_CLIENT: reqwest::Client = reqwest::Client::builder()
+// Shared HTTP client used for all outgoing plain requests: timeouts keep
+// a hanging remote (connect or transfer) from stalling pkh indefinitely.
+// The short pool idle timeout and TCP keepalive avoid reusing keep-alive
+// connections that the remote closed in the meantime, which surfaces as
+// spurious 'error sending request' failures on busy mirrors/CDNs.
+static HTTP_CLIENT: LazyLock<reqwest::Client> = LazyLock::new(|| {
+    reqwest::Client::builder()
         .connect_timeout(Duration::from_secs(10))
         .timeout(Duration::from_secs(30))
         .pool_idle_timeout(Duration::from_secs(10))
         .tcp_keepalive(Duration::from_secs(30))
         .build()
-        .expect("building the shared HTTP client with static options cannot fail");
-}
+        .expect("building the shared HTTP client with static options cannot fail")
+});
 
 /// Shared HTTP client with a connect timeout (10s) and a total request
 /// timeout (30s), to be used for all outgoing plain HTTP(S) requests

src/new/templates/mod.rs

@@ -52,6 +52,7 @@ pub mod rust;
 pub mod shell;
 
 use std::path::{Path, PathBuf};
+use std::sync::LazyLock;
 
 use serde::Deserialize;
 
@@ -478,15 +479,13 @@ static TEMPLATE_SOURCES: &[TemplateSources] = &[
     },
 ];
 
-lazy_static::lazy_static! {
-    /// The parsed registry: manifest data plus resolved hooks, in the
-    /// order of [`TEMPLATE_SOURCES`] (wizard menu = detection priority).
-    static ref REGISTRY: Vec<Template> = build_registry();
-    /// The registry ids ([`Template::id`]), cached for the `TemplateId`
-    /// accessors.
-    static ref REGISTRY_IDS: Vec<TemplateId> =
-        REGISTRY.iter().map(Template::id).collect();
-}
+/// The parsed registry: manifest data plus resolved hooks, in the
+/// order of [`TEMPLATE_SOURCES`] (wizard menu = detection priority).
+static REGISTRY: LazyLock<Vec<Template>> = LazyLock::new(build_registry);
+/// The registry ids ([`Template::id`]), cached for the `TemplateId`
+/// accessors.
+static REGISTRY_IDS: LazyLock<Vec<TemplateId>> =
+    LazyLock::new(|| REGISTRY.iter().map(Template::id).collect());
 
 /// Parse and cross-check every embedded manifest into the registry. The
 /// files ship inside the binary, so anything malformed here is a build-time