Auto merge of #131662 - matthiaskrgr:rollup-r1wkfxw, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #130356 (don't warn about a missing change-id in CI)
 - #130900 (Do not output () on empty description)
 - #131066 (Add the Chinese translation entry to the RustByExample build process)
 - #131067 (Fix std_detect links)
 - #131644 (Clean up some Miri things in `sys/windows`)
 - #131646 (sys/unix: add comments for some Miri fallbacks)
 - #131653 (Remove const trait bound modifier hack)
 - #131659 (enable `download_ci_llvm` test)

r? `@ghost`
`@rustbot` modify labels: rollup

4 files changed, 32 insertions, 12 deletions

diff --git a/src/bootstrap/src/bin/main.rs b/src/bootstrap/src/bin/main.rs
index b9df7336cca..e9ec79e417b 100644
--- a/src/bootstrap/src/bin/main.rs
+++ b/src/bootstrap/src/bin/main.rs
@@ -14,6 +14,7 @@ use bootstrap::{
     Build, CONFIG_CHANGE_HISTORY, Config, Flags, Subcommand, find_recent_config_change_ids,
     human_readable_changes, t,
 };
+use build_helper::ci::CiEnv;
 
 fn main() {
     let args = env::args().skip(1).collect::<Vec<_>>();
@@ -54,9 +55,12 @@ fn main() {
         };
     }
 
-    // check_version warnings are not printed during setup
-    let changelog_suggestion =
-        if matches!(config.cmd, Subcommand::Setup { .. }) { None } else { check_version(&config) };
+    // check_version warnings are not printed during setup, or during CI
+    let changelog_suggestion = if matches!(config.cmd, Subcommand::Setup { .. }) || CiEnv::is_ci() {
+        None
+    } else {
+        check_version(&config)
+    };
 
     // NOTE: Since `./configure` generates a `config.toml`, distro maintainers will see the
     // changelog warning, not the `x.py setup` message.
diff --git a/src/bootstrap/src/core/build_steps/doc.rs b/src/bootstrap/src/core/build_steps/doc.rs
index 3d504c3771f..ca2b8742647 100644
--- a/src/bootstrap/src/core/build_steps/doc.rs
+++ b/src/bootstrap/src/core/build_steps/doc.rs
@@ -82,7 +82,7 @@ book!(
     EditionGuide, "src/doc/edition-guide", "edition-guide", &[], submodule;
     EmbeddedBook, "src/doc/embedded-book", "embedded-book", &[], submodule;
     Nomicon, "src/doc/nomicon", "nomicon", &[], submodule;
-    RustByExample, "src/doc/rust-by-example", "rust-by-example", &["ja"], submodule;
+    RustByExample, "src/doc/rust-by-example", "rust-by-example", &["ja", "zh"], submodule;
     RustdocBook, "src/doc/rustdoc", "rustdoc", &[];
     StyleGuide, "src/doc/style-guide", "style-guide", &[];
 );
@@ -718,6 +718,10 @@ fn doc_std(
         .arg("--target-dir")
         .arg(&*target_dir.to_string_lossy())
         .arg("-Zskip-rustdoc-fingerprint")
+        .arg("-Zrustdoc-map")
+        .rustdocflag("--extern-html-root-url")
+        .rustdocflag("std_detect=https://docs.rs/std_detect/latest/")
+        .rustdocflag("--extern-html-root-takes-precedence")
         .rustdocflag("--resource-suffix")
         .rustdocflag(&builder.version);
     for arg in extra_args {
diff --git a/src/bootstrap/src/core/config/tests.rs b/src/bootstrap/src/core/config/tests.rs
index 9c67010d88d..2611b6cf51b 100644
--- a/src/bootstrap/src/core/config/tests.rs
+++ b/src/bootstrap/src/core/config/tests.rs
@@ -10,6 +10,7 @@ use serde::Deserialize;
 use super::flags::Flags;
 use super::{ChangeIdWrapper, Config};
 use crate::core::build_steps::clippy::get_clippy_rules_in_order;
+use crate::core::build_steps::llvm;
 use crate::core::config::{LldMode, Target, TargetSelection, TomlConfig};
 
 pub(crate) fn parse(config: &str) -> Config {
@@ -19,13 +20,22 @@ pub(crate) fn parse(config: &str) -> Config {
     )
 }
 
-// FIXME: Resume this test after establishing a stabilized change tracking logic.
-#[ignore]
 #[test]
 fn download_ci_llvm() {
-    assert!(parse("").llvm_from_ci);
-    assert!(parse("llvm.download-ci-llvm = true").llvm_from_ci);
-    assert!(!parse("llvm.download-ci-llvm = false").llvm_from_ci);
+    let config = parse("");
+    let is_available = llvm::is_ci_llvm_available(&config, config.llvm_assertions);
+    if is_available {
+        assert!(config.llvm_from_ci);
+    }
+
+    let config = parse("llvm.download-ci-llvm = true");
+    let is_available = llvm::is_ci_llvm_available(&config, config.llvm_assertions);
+    if is_available {
+        assert!(config.llvm_from_ci);
+    }
+
+    let config = parse("llvm.download-ci-llvm = false");
+    assert!(!config.llvm_from_ci);
 
     let if_unchanged_config = parse("llvm.download-ci-llvm = \"if-unchanged\"");
     if if_unchanged_config.llvm_from_ci {
diff --git a/src/bootstrap/src/lib.rs b/src/bootstrap/src/lib.rs
index ecb219ea33f..3924a6d714e 100644
--- a/src/bootstrap/src/lib.rs
+++ b/src/bootstrap/src/lib.rs
@@ -1575,9 +1575,11 @@ Executed at: {executed_at}"#,
     fn rust_version(&self) -> String {
         let mut version = self.rust_info().version(self, &self.version);
         if let Some(ref s) = self.config.description {
-            version.push_str(" (");
-            version.push_str(s);
-            version.push(')');
+            if !s.is_empty() {
+                version.push_str(" (");
+                version.push_str(s);
+                version.push(')');
+            }
         }
         version
     }