feat(25.10): rustc-1.85 slices

[lczyk]

Proposed changes

slices of rustc-1.85

trivial changes with respect to #610:

• rename 1.84 -> 1.85: 0db870d e70a678
• remove bundled libEnzyme: ac76142

this PR has a commit with changes from the PRs it depends on. i will update this PR once it's dependencies are merged.

Related issues/PRs

this PR is part of the following stack:

• feat(25.10): add cpp-15 #790
  • feat(25.10): add gcc-15 #795
    • feat(25.10): add binutils and gcc symlinks #809
      • feat(25.10): rustc-1.85 slices #786 (this PR)
      • feat(25.10): rustc-1.88 slices #799

Forward porting

the default rust versions for each of the current versions of Ubuntu are:

ubuntu	rustc	gcc
24.04	1.75	13
25.04	1.84	14
25.10	1.85	15
26.04	1.88	15

• 1.75
  • feat(24.04): rustc-1.75 slices #806
• 1.84
  • feat(25.04): rustc-1.84 slices #610 (EOL)
• 1.85
  • feat(24.04): rustc-1.85 slices #843
  • feat(25.04): rustc-1.85 slices #840 (EOL)
  • feat(25.10): rustc-1.85 slices #786 (this PR)
  • feat(26.04): rustc-1.85 slices #788
• 1.88
  • feat(25.10): rustc-1.88 slices #799
  • feat(26.04): rustc-1.88 slices  #801

Checklist

• I have read the contributing guidelines
• I have tested my changes (see how)
• I have already submitted the CLA form

🦀

[github-actions]

Diff of dependencies:

slices/rustc-1.85.yaml

@@ -1,7 +1,6 @@
-binutils
-gcc
-libc-dev
+base-files
 libc6
+libc6-dev
 libgcc-s1
 libllvm19
 libstd-rust-1.85-dev

---

[lczyk]

removed 'priority' until unblocked to keep the board a bit easier to parse for maintainers

[alesancor1]

This is now unblocked, can you rebase the changes @lczyk? 👍

[cjdcordeiro]

@alesancor1 pls check again

[alesancor1]

LGTM, pre-approving pending the resolution of the comment by @cjdcordeiro

Aside from that, all good - just proposing a convention for flagging symlinks below:

[lczyk]

moved priority to #806

[cjdcordeiro]

ship it !