Auto merge of rust-lang#117191 - Skgland:easy-beta-channels, r=Mark-Simulacrum

generate beta manifests as pre-requisit to rust-lang/rustup#1329 <rust-lang/rustup#1329 (comment)> mentioned (a while ago) this would be the next step

Author: bors

src/tools/build-manifest/src/main.rs

@@ -266,6 +266,29 @@ impl Builder {
  // channel-rust-1.XX.toml
  let major_minor = rust_version.split('.').take(2).collect::<Vec<_>>().join(".");
  self.write_channel_files(&major_minor, &manifest);
+ } else if channel == "beta" {
+ // channel-rust-1.XX.YY-beta.Z.toml
+ let rust_version = self
+ .versions
+ .version(&PkgType::Rust)
+ .expect("missing Rust tarball")
+ .version
+ .expect("missing Rust version")
+ .split(' ')
+ .next()
+ .unwrap()
+ .to_string();
+ self.write_channel_files(&rust_version, &manifest);
+
+ // channel-rust-1.XX.YY-beta.toml
+ let major_minor_patch_beta =
+ rust_version.split('.').take(3).collect::<Vec<_>>().join(".");
+ self.write_channel_files(&major_minor_patch_beta, &manifest);
+
+ // channel-rust-1.XX-beta.toml
+ let major_minor_beta =
+ format!("{}-beta", rust_version.split('.').take(2).collect::<Vec<_>>().join("."));
+ self.write_channel_files(&major_minor_beta, &manifest);
  }
 
  if let Some(path) = std::env::var_os("BUILD_MANIFEST_SHIPPED_FILES_PATH") {