bootstrap minor improvements and clean-ups

src/bootstrap/src/core/build_steps/dist.rs

@@ -19,6 +19,7 @@ use object::BinaryFormat;
 
 use crate::core::build_steps::doc::DocumentationFormat;
 use crate::core::build_steps::tool::{self, Tool};
+use crate::core::build_steps::vendor::default_paths_to_vendor;
 use crate::core::build_steps::{compile, llvm};
 use crate::core::builder::{Builder, Kind, RunConfig, ShouldRun, Step};
 use crate::core::config::TargetSelection;
@@ -1016,35 +1017,18 @@ impl Step for PlainSourceTarball {
         if builder.rust_info().is_managed_git_subrepository()
             || builder.rust_info().is_from_tarball()
         {
-            // FIXME: This code looks _very_ similar to what we have in `src/core/build_steps/vendor.rs`
-            // perhaps it should be removed in favor of making `dist` perform the `vendor` step?
-
             builder.require_and_update_all_submodules();
 
             // Vendor all Cargo dependencies
             let mut cmd = command(&builder.initial_cargo);
-            cmd.arg("vendor")
-                .arg("--versioned-dirs")
-                .arg("--sync")
-                .arg(builder.src.join("./src/tools/cargo/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./src/tools/rust-analyzer/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./compiler/rustc_codegen_cranelift/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./compiler/rustc_codegen_gcc/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./library/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./src/bootstrap/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./src/tools/opt-dist/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./src/tools/rustc-perf/Cargo.toml"))
-                .arg("--sync")
-                .arg(builder.src.join("./src/tools/rustbook/Cargo.toml"))
-                // Will read the libstd Cargo.toml
-                // which uses the unstable `public-dependency` feature.
+            cmd.arg("vendor").arg("--versioned-dirs");
+
+            for p in default_paths_to_vendor(builder) {
+                cmd.arg("--sync").arg(p);
+            }
+
+            cmd
+                // Will read the libstd Cargo.toml which uses the unstable `public-dependency` feature.
                 .env("RUSTC_BOOTSTRAP", "1")
                 .current_dir(plain_dst_src);
 

src/bootstrap/src/core/build_steps/setup.rs

@@ -247,9 +247,11 @@ pub struct Link;
 impl Step for Link {
     type Output = ();
     const DEFAULT: bool = true;
+
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
         run.alias("link")
     }
+
     fn make_run(run: RunConfig<'_>) {
         if run.builder.config.dry_run() {
             return;
@@ -262,21 +264,30 @@ impl Step for Link {
     }
     fn run(self, builder: &Builder<'_>) -> Self::Output {
         let config = &builder.config;
+
         if config.dry_run() {
             return;
         }
+
+        if !rustup_installed(builder) {
+            println!("WARNING: `rustup` is not installed; Skipping `stage1` toolchain linking.");
+            return;
+        }
+
         let stage_path =
             ["build", config.build.rustc_target_arg(), "stage1"].join(MAIN_SEPARATOR_STR);
-        if !rustup_installed(builder) {
-            eprintln!("`rustup` is not installed; cannot link `stage1` toolchain");
-        } else if stage_dir_exists(&stage_path[..]) && !config.dry_run() {
+
+        if stage_dir_exists(&stage_path[..]) && !config.dry_run() {
             attempt_toolchain_link(builder, &stage_path[..]);
         }
     }
 }
 
 fn rustup_installed(builder: &Builder<'_>) -> bool {
-    command("rustup").arg("--version").run_capture_stdout(builder).is_success()
+    let mut rustup = command("rustup");
+    rustup.arg("--version");
+
+    rustup.allow_failure().run_always().run_capture_stdout(builder).is_success()
 }
 
 fn stage_dir_exists(stage_path: &str) -> bool {

src/bootstrap/src/core/build_steps/tool.rs

@@ -1091,18 +1091,13 @@ macro_rules! tool_extended {
     }
 }
 
-// NOTE: tools need to be also added to `Builder::get_step_descriptions` in `builder.rs`
-// to make `./x.py build <tool>` work.
 tool_extended!((self, builder),
     Cargofmt, "src/tools/rustfmt", "cargo-fmt", stable=true;
     CargoClippy, "src/tools/clippy", "cargo-clippy", stable=true;
     Clippy, "src/tools/clippy", "clippy-driver", stable=true, add_bins_to_sysroot = ["clippy-driver", "cargo-clippy"];
     Miri, "src/tools/miri", "miri", stable=false, add_bins_to_sysroot = ["miri"];
     CargoMiri, "src/tools/miri/cargo-miri", "cargo-miri", stable=true, add_bins_to_sysroot = ["cargo-miri"];
-    // FIXME: tool_std is not quite right, we shouldn't allow nightly features.
-    // But `builder.cargo` doesn't know how to handle ToolBootstrap in stages other than 0,
-    // and this is close enough for now.
-    Rls, "src/tools/rls", "rls", stable=true, tool_std=true;
+    Rls, "src/tools/rls", "rls", stable=true;
     Rustfmt, "src/tools/rustfmt", "rustfmt", stable=true, add_bins_to_sysroot = ["rustfmt", "cargo-fmt"];
 );
 

src/bootstrap/src/core/build_steps/vendor.rs

@@ -4,6 +4,26 @@ use crate::core::build_steps::tool::SUBMODULES_FOR_RUSTBOOK;
 use crate::core::builder::{Builder, RunConfig, ShouldRun, Step};
 use crate::utils::exec::command;
 
+/// List of default paths used for vendoring for `x vendor` and dist tarballs.
+pub fn default_paths_to_vendor(builder: &Builder<'_>) -> Vec<PathBuf> {
+    let mut paths = vec![];
+    for p in [
+        "src/tools/cargo/Cargo.toml",
+        "src/tools/rust-analyzer/Cargo.toml",
+        "compiler/rustc_codegen_cranelift/Cargo.toml",
+        "compiler/rustc_codegen_gcc/Cargo.toml",
+        "library/Cargo.toml",
+        "src/bootstrap/Cargo.toml",
+        "src/tools/rustbook/Cargo.toml",
+        "src/tools/rustc-perf/Cargo.toml",
+        "src/tools/opt-dist/Cargo.toml",
+    ] {
+        paths.push(builder.src.join(p));
+    }
+
+    paths
+}
+
 #[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub(crate) struct Vendor {
     sync_args: Vec<PathBuf>,
@@ -42,16 +62,8 @@ impl Step for Vendor {
         }
 
         // Sync these paths by default.
-        for p in [
-            "src/tools/cargo/Cargo.toml",
-            "src/tools/rust-analyzer/Cargo.toml",
-            "compiler/rustc_codegen_cranelift/Cargo.toml",
-            "compiler/rustc_codegen_gcc/Cargo.toml",
-            "library/Cargo.toml",
-            "src/bootstrap/Cargo.toml",
-            "src/tools/rustbook/Cargo.toml",
-        ] {
-            cmd.arg("--sync").arg(builder.src.join(p));
+        for p in default_paths_to_vendor(builder) {
+            cmd.arg("--sync").arg(p);
         }
 
         // Also sync explicitly requested paths.

src/bootstrap/src/core/builder.rs

@@ -1449,15 +1449,11 @@ impl<'a> Builder<'a> {
             assert_eq!(target, compiler.host);
         }
 
-        if self.config.rust_optimize.is_release() {
-            // FIXME: cargo bench/install do not accept `--release`
-            // and miri doesn't want it
-            match cmd_kind {
-                Kind::Bench | Kind::Install | Kind::Miri | Kind::MiriSetup | Kind::MiriTest => {}
-                _ => {
-                    cargo.arg("--release");
-                }
-            }
+        if self.config.rust_optimize.is_release() &&
+        // cargo bench/install do not accept `--release` and miri doesn't want it
+        !matches!(cmd_kind, Kind::Bench | Kind::Install | Kind::Miri | Kind::MiriSetup | Kind::MiriTest)
+        {
+            cargo.arg("--release");
         }
 
         // Remove make-related flags to ensure Cargo can correctly set things up

src/bootstrap/src/core/download.rs

@@ -616,8 +616,6 @@ impl Config {
         };
 
         // For the beta compiler, put special effort into ensuring the checksums are valid.
-        // FIXME: maybe we should do this for download-rustc as well? but it would be a pain to update
-        // this on each and every nightly ...
         let checksum = if should_verify {
             let error = format!(
                 "src/stage0 doesn't contain a checksum for {url}. \