Rename the src install build step to rust-src. by davidv1992 · Pull Request #162423 · rust-lang/rust

davidv1992 · 2026-09-07T12:17:59Z

This avoids installing the src component from the command line also triggering installing a whole lot of other things which are behind the src path. Furthermore, it makes the name match the component as distributed in rustup, reducing confusion.

rustbot · 2026-09-07T12:18:03Z

r? @Mark-Simulacrum

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Mark-Simulacrum

This also should be documented in the bootstrap changelog (https://github.com/rust-lang/rust/blob/20d35a3ae8f310f2a002e5f6e0bc583830010cd4/src/bootstrap/src/utils/change_tracker.rs). I don't think we support a good way to soft-deprecate so probably just changing this is OK? I'll mark @rustbot label +relnotes, so we can call it out as a compatibility note though.

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Mark-Simulacrum · 2026-09-13T22:52:00Z


    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.path("src")
+        run.alias("rust-src")


I think this will break

rust/src/bootstrap/mk/Makefile.in

Line 107 in 20d35a3

SKIP_SRC := --skip=src

-- can you fix that up? And look for some other cases of it.

Fixed it, and fixed the remaining 4 occurrences I could find. I have taken the approach of everywhere src is used, it is intentional that rust-src is included, but given the size of the src directory, this may not always be the case, so if someone with more domain knowledge can take a look that would be great.

rustbot · 2026-09-13T22:53:37Z

Reminder, once the PR becomes ready for a review, use @rustbot ready.

rustbot · 2026-09-13T22:53:38Z

Error: Unknown labels: a, as, call, can, compatibility, it, note, out, so, though, we

Please file an issue on GitHub at triagebot if there's a problem with this bot, or reach out on #triagebot on Zulip.

rustbot · 2026-09-16T07:43:47Z

Warning

If you are changing how CI LLVM is built or linked, make sure to bump
src/bootstrap/download-ci-llvm-stamp.

cc @jieyouxu

This PR modifies bootstrap.example.toml.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

davidv1992 · 2026-09-16T07:49:49Z

Since rustbot added you into the conversation: @jieyouxu, there is technically a change to a default value in the bootstrap configuration, as rust-src is now its own thing rather than part of src. However, the default behavior of build.tools does not change, rust-src is built when extended=true in both the old and new situation. Should I still add an entry to CONFIG_CHANGE_HISTORY?

davidv1992 · 2026-09-16T07:50:19Z

@rustbot ready

jieyouxu · 2026-09-16T07:57:26Z

I think that can't hurt, just in case. (Also that cc is actually for the CI changes not the bootstrap changes, but yeah anyway 😆)

davidv1992 · 2026-09-16T08:02:41Z

Ok, Added the entry as a warning.

jieyouxu · 2026-09-16T08:04:32Z

@@ -324,12 +324,12 @@ impl CommandLineStep for Src {
    const IS_HOST: bool = true;

    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.path("src")
+        run.alias("rust-src")


cc @Kobzol as well, in case you know of an edge case for this alias.

EDIT: ah, but this is an install alias, which I am much less worried about (as opposed to build/dist aliases).

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Left some comments. I think that @Mark-Simulacrum's comment wasn't correct.

…uwer Rollup of 15 pull requests Successful merges: - #160401 (sparc: make ABI consistent with clang) - #161777 (Add Natvis visualiser and debuginfo tests for `f128`) - #162423 (Rename the src install build step to rust-src.) - #162740 (stdarch subtree update) - #162824 (link Enzyme and the offload with in-tree lld if possible) - #161005 (fix: unfulfilled nested dead code lint) - #161803 (Fix docs of make_ascii_lowercase/make_ascii_upercase) - #162256 (Add mentions to sync back `RELEASES.md` to the `main` branch) - #162661 (simplify `Target::GenericParam`) - #162666 (Tidy footnote in `platform-support.md`) - #162803 (docs(num): add documentation for `NonZero::from_str`) - #162906 (Move more `rustdoc-html` tests in the right location) - #162922 (An assortment of polonius tweaks) - #162929 (Update unicode_data to Unicode version 18.0.0) - #162930 (Use niche length type for strlen to guarantee `isize::MAX` bound)

jieyouxu · 2026-09-18T15:34:27Z

One moment.
@bors r-
@bors try jobs=test_x86_64-fuchsia

Rename the src install build step to rust-src. try-job: test_x86_64-fuchsia

jieyouxu · 2026-09-18T15:36:17Z

@bors try jobs=test-x86_64-fuchsia

Rename the src install build step to rust-src. try-job: test-x86_64-fuchsia

jieyouxu · 2026-09-18T15:39:04Z

@bors rollup=never note="modifies ./x install logic"

rust-bors · 2026-09-18T15:59:28Z

💔 Test for bc11f45 failed: CI. Failed job:

try - test-x86_64-fuchsia (web logs, enhanced plaintext logs)

erickt · 2026-09-18T18:13:21Z

Could you also update this line from src to rust-src? https://github.com/rust-lang/rust/blob/main/src/ci/docker/host-x86_64/test-x86_64-fuchsia/install-rust-for-fuchsia.sh#L8

This avoids installing the src component from the command line also triggering a whole lot of other things which are behind the src path. Furthermore, it makes the name match the component as distributed in rustup, reducing confusion.

rustbot · 2026-09-22T11:45:49Z

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

davidv1992 · 2026-09-22T11:46:32Z

@erickt I have made the requested change. That was the only remaining issue right?

@rustbot ready

rustbot assigned Mark-Simulacrum Sep 7, 2026

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) labels Sep 7, 2026

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davidv1992 force-pushed the install-rust-src branch from 06fd35f to 39b6489 Compare September 7, 2026 14:04

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davidv1992 force-pushed the install-rust-src branch from 39b6489 to 348b669 Compare September 7, 2026 14:19

Mark-Simulacrum requested changes Sep 13, 2026

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rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Sep 13, 2026

Mark-Simulacrum added the relnotes Marks issues that should be documented in the release notes of the next release. label Sep 14, 2026

rustbot mentioned this pull request Sep 14, 2026

Tracking issue for release notes of #162423: Rename the src install build step to rust-src. #162743

Open

davidv1992 force-pushed the install-rust-src branch from 348b669 to 0bf5f27 Compare September 16, 2026 07:43

rustbot added A-CI Area: Our Github Actions CI A-testsuite Area: The testsuite used to check the correctness of rustc T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue. labels Sep 16, 2026

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davidv1992 force-pushed the install-rust-src branch from 0bf5f27 to 0dc4b6b Compare September 16, 2026 08:00

jieyouxu reviewed Sep 16, 2026

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jieyouxu mentioned this pull request Sep 18, 2026

Temporarily disable test-x86_64-fuchsia #162972

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rust-bors Bot pushed a commit that referenced this pull request Sep 18, 2026

Auto merge of #162423 - davidv1992:install-rust-src, r=<try>

de16a1c

Rename the src install build step to rust-src. try-job: test_x86_64-fuchsia

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rust-bors Bot pushed a commit that referenced this pull request Sep 18, 2026

Auto merge of #162423 - davidv1992:install-rust-src, r=<try>

bc11f45

Rename the src install build step to rust-src. try-job: test-x86_64-fuchsia

jieyouxu added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Sep 18, 2026

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Rename the src install build step to rust-src.

abcb978

This avoids installing the src component from the command line also triggering a whole lot of other things which are behind the src path. Furthermore, it makes the name match the component as distributed in rustup, reducing confusion.

davidv1992 force-pushed the install-rust-src branch from 4e32edb to abcb978 Compare September 22, 2026 11:45

jieyouxu removed their assignment Sep 22, 2026

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Sep 22, 2026

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