Create Updating-musl-1.2.5.md #1641

Gankra · 2025-06-18T20:01:14Z

Tentative blogpost for:

Info about when this will release is of course placeholder, and I'm happy to update the wording or add whatever details are desires.

Rendered

est31

would it be worth to talk about dynamic linking? i.e. to say that this doesn't affect people who link dynamically. But does it also increase the minimum musl version we support dynamic linking to? That's a tougher question. IDK whether we have to answer it, but if we know the answer, we should maybe write it down here.

The maintainers of musl themselves think that dynamic linking is an important way to use their libc, and it should be used for the musl based distros.

content/Updating-musl-1.2.5.md

alex · 2025-06-19T12:35:30Z

I think clarifying dynamical linking would be extremely valuable. My interest here is as someone who ships Python packages with Rust code that needs to adhere to the ABI for musl package (https://peps.python.org/pep-0656/). Host tools requiring a newer musl is fine, but crates compiled for these targets requiring a newer musl would have unclear impacts.

workingjubilee · 2025-06-19T16:35:13Z

Hm. Notably, stdlib maintainers will need to know if we can use APIs that were only exposed by musl 1.2.4 and musl 1.2.5 for these targets, so we have a similar question as @alex.

Update bundled musl to 1.2.5 Update the bundled musl library from 1.2.3 to the 1.2.5 release from February 29, 2024. * mcp: rust-lang/compiler-team#887 * blog: rust-lang/blog.rust-lang.org#1641 * Prior update: #107129 * [musl releases page](https://musl.libc.org/releases.html) -------- This is a rebase of * #125692 Which removes the second speculative commit which ended up not panning out. I've added my own second commit that updates all other places I could find that referenced musl 1.2.3 in the codebase. try-job: dist-x86_64-musl try-job: dist-i586-gnu-i586-i686-musl try-job: dist-x86_64-linux

Gankra · 2025-06-19T22:39:22Z

(I'll incorporate the various changes once I have the crater results and can do it all at once)

…wiser Update bundled musl to 1.2.5 Update the bundled musl library from 1.2.3 to the 1.2.5 release from February 29, 2024. * mcp: rust-lang/compiler-team#887 * blog: rust-lang/blog.rust-lang.org#1641 * Prior update: rust-lang#107129 * [musl releases page](https://musl.libc.org/releases.html) -------- This is a rebase of * rust-lang#125692 Which removes the second speculative commit which ended up not panning out. I've added my own second commit that updates all other places I could find that referenced musl 1.2.3 in the codebase. try-job: dist-x86_64-musl try-job: dist-i586-gnu-i586-i686-musl try-job: dist-x86_64-linux

Rollup merge of #142682 - Gankra:update_musl_1.2.5, r=wesleywiser Update bundled musl to 1.2.5 Update the bundled musl library from 1.2.3 to the 1.2.5 release from February 29, 2024. * mcp: rust-lang/compiler-team#887 * blog: rust-lang/blog.rust-lang.org#1641 * Prior update: #107129 * [musl releases page](https://musl.libc.org/releases.html) -------- This is a rebase of * #125692 Which removes the second speculative commit which ended up not panning out. I've added my own second commit that updates all other places I could find that referenced musl 1.2.3 in the codebase. try-job: dist-x86_64-musl try-job: dist-i586-gnu-i586-i686-musl try-job: dist-x86_64-linux

Kobzol · 2025-11-01T20:29:21Z

Congratz on the PR being merged! 🎉 The change should get into 1.93, which will be stable on January 22. So we have a few weeks to publish this blog post.

content/Updating-musl-1.2.5.md

Gankra · 2025-11-18T16:38:42Z

The blogpost is now updated (it's publication date is wrong but I assume that's something y'all clean up at the end).

content/Updating-musl-1.2.5.md

Co-authored-by: Jubilee <workingjubilee@gmail.com>

…, r=lqd Fix platform supports docs tiny typo This was noticed in rust-lang/blog.rust-lang.org#1641 (comment) Thanks :)

Rollup merge of #149154 - apiraino:fix-platform-support-typo, r=lqd Fix platform supports docs tiny typo This was noticed in rust-lang/blog.rust-lang.org#1641 (comment) Thanks :)

apiraino

At a high level, LGTM

jieyouxu · 2025-12-05T01:30:23Z

content/Updating-musl-1.2.5.md

@@ -0,0 +1,107 @@
+++
+path = "2025/07/01/Updating-musl-1.2.5"


Remark (for when we will be merging this): we'll need to bump this date to a more recent date :D

jieyouxu

Thanks for working on this change and this blog post. Content mostly looks good, just a tone nit for the impacted gamedev project authors

jieyouxu · 2025-12-05T01:35:49Z

content/Updating-musl-1.2.5.md

+
+At this point we expect there will be minimal breakage, and most breakage should be resolved by a `cargo update`. We believe this update shouldn't be held back any longer, as it contains critical fixes for the musl target.
+
+Manual inspection of some of the affected projects indicates they largely haven't run `cargo update` in 2 years, often because they haven't had any changes in 2 years. Analysis suggests this Rust release will be a devastating blow to the thriving ecosystem of Rust gamedev projects that you started 3 years ago and will definitely get back to this year.


Suggestion: this sentence comes across as a bit snarky to / dismissive of the authors of those gamedev projects. I would maybe just say something more neutral

Analysis of impacted projects suggests this Rust release will affect quite a few gamedev projects that have not run cargo update in several years.

Alternative that I think also lightens things a bit:

...because they haven't had any changes in 2 years. (This may a problem for the gamedev project you started three years ago and will definitely get back to this year. When you do, just run cargo update.)

jieyouxu · 2025-12-05T01:38:44Z

content/Updating-musl-1.2.5.md

+
+Manual inspection of some of the affected projects indicates they largely haven't run `cargo update` in 2 years, often because they haven't had any changes in 2 years. Analysis suggests this Rust release will be a devastating blow to the thriving ecosystem of Rust gamedev projects that you started 3 years ago and will definitely get back to this year.
+
+Build failures from this change will typically look like "some \`extern\` functions couldn't be found; some native libraries may need to be installed or have their path specified", often specifically for "undefined reference to \`open64'", often while trying to build very old versions of the `getrandom` crate (hence the decimation of abandoned gamedev projects in particular):


Suggestion: ditto above, maybe a slightly more neutral wording

Suggested change

Build failures from this change will typically look like "some \`extern\` functions couldn't be found; some native libraries may need to be installed or have their path specified", often specifically for "undefined reference to \`open64'", often while trying to build very old versions of the `getrandom` crate (hence the decimation of abandoned gamedev projects in particular):

Build failures from this change will typically look like "some \`extern\` functions couldn't be found; some native libraries may need to be installed or have their path specified", often specifically for "undefined reference to \`open64'", often while trying to build very old versions of the `getrandom` crate (hence the outsized impact on gamedev projects that haven't updated their dependencies in several years in particular):

Create Updating-musl-1.2.5.md

2ec8a8e

Gankra mentioned this pull request Jun 18, 2025

Upgrade *-linux-musl targets to musl 1.2.5 rust-lang/compiler-team#887

Closed

3 tasks

fixes

712e9a8

est31 approved these changes Jun 18, 2025

View reviewed changes

content/Updating-musl-1.2.5.md Outdated Show resolved Hide resolved

content/Updating-musl-1.2.5.md Show resolved Hide resolved

Gankra mentioned this pull request Jun 19, 2025

Update bundled musl to 1.2.5 rust-lang/rust#142682

Merged

Gelbpunkt suggested changes Nov 17, 2025

View reviewed changes

content/Updating-musl-1.2.5.md Outdated Show resolved Hide resolved

cleanup and update

dcf4b8b

riking reviewed Nov 18, 2025

View reviewed changes

content/Updating-musl-1.2.5.md Outdated Show resolved Hide resolved

Fix table

23833ef

Co-authored-by: Jubilee <workingjubilee@gmail.com>

apiraino mentioned this pull request Nov 20, 2025

Fix platform supports docs tiny typo rust-lang/rust#149154

Merged

apiraino approved these changes Nov 27, 2025

View reviewed changes

apiraino requested a review from workingjubilee November 27, 2025 11:41

jieyouxu reviewed Dec 5, 2025

View reviewed changes

jieyouxu approved these changes Dec 5, 2025

View reviewed changes


		At this point we expect there will be minimal breakage, and most breakage should be resolved by a `cargo update`. We believe this update shouldn't be held back any longer, as it contains critical fixes for the musl target.

		Manual inspection of some of the affected projects indicates they largely haven't run `cargo update` in 2 years, often because they haven't had any changes in 2 years. Analysis suggests this Rust release will be a devastating blow to the thriving ecosystem of Rust gamedev projects that you started 3 years ago and will definitely get back to this year.


		Manual inspection of some of the affected projects indicates they largely haven't run `cargo update` in 2 years, often because they haven't had any changes in 2 years. Analysis suggests this Rust release will be a devastating blow to the thriving ecosystem of Rust gamedev projects that you started 3 years ago and will definitely get back to this year.

		Build failures from this change will typically look like "some \`extern\` functions couldn't be found; some native libraries may need to be installed or have their path specified", often specifically for "undefined reference to \`open64'", often while trying to build very old versions of the `getrandom` crate (hence the decimation of abandoned gamedev projects in particular):

Create Updating-musl-1.2.5.md #1641

Are you sure you want to change the base?

Create Updating-musl-1.2.5.md #1641

Conversation

Gankra commented Jun 18, 2025 • edited by rustbot Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

est31 left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Uh oh!

alex commented Jun 19, 2025

Uh oh!

workingjubilee commented Jun 19, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Gankra commented Jun 19, 2025

Uh oh!

Kobzol commented Nov 1, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

Gankra commented Nov 18, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

apiraino left a comment • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

jieyouxu Dec 5, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

jieyouxu left a comment

Choose a reason for hiding this comment

Uh oh!

jieyouxu Dec 5, 2025

Choose a reason for hiding this comment

Uh oh!

tgross35 Dec 5, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

jieyouxu Dec 5, 2025

Choose a reason for hiding this comment

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

10 participants

Gankra commented Jun 18, 2025 •

edited by rustbot

Loading

workingjubilee commented Jun 19, 2025 •

edited

Loading

Kobzol commented Nov 1, 2025 •

edited

Loading

Gankra commented Nov 18, 2025 •

edited

Loading

apiraino left a comment •

edited

Loading

jieyouxu Dec 5, 2025 •

edited

Loading

tgross35 Dec 5, 2025 •

edited

Loading