Recompress by channel, and ignore nightly

Author: Mark-Simulacrum

src/main.rs

@@ -175,15 +175,24 @@ impl Context {
 
         // Quickly produce gzip compressed artifacts that are needed for successful manifest
         // building.
-        let recompress = [
-            self.dl_dir()
-                .join("rust-nightly-x86_64-unknown-linux-gnu.tar.xz"),
-            self.dl_dir()
-                .join("cargo-nightly-x86_64-unknown-linux-gnu.tar.xz"),
-        ];
-        recompress.par_iter().try_for_each(|tarball| {
-            recompress::recompress_file(tarball, false, flate2::Compression::fast(), false)
-        })?;
+        //
+        // Nightly (1.71+) supports this upstream without the extra recompression, see
+        // https://github.com/rust-lang/rust/pull/110436.
+        if self.config.channel != Channel::Nightly {
+            let recompress = [
+                self.dl_dir().join(format!(
+                    "rust-{}-x86_64-unknown-linux-gnu.tar.xz",
+                    self.config.channel
+                )),
+                self.dl_dir().join(format!(
+                    "cargo-{}-x86_64-unknown-linux-gnu.tar.xz",
+                    self.config.channel
+                )),
+            ];
+            recompress.par_iter().try_for_each(|tarball| {
+                recompress::recompress_file(tarball, false, flate2::Compression::fast(), false)
+            })?;
+        }
 
         // Ok we've now determined that a release needs to be done.