chore: fix semver checks in CI

[doug-q]

No description provided.

[hugrbot]

This PR contains breaking changes to the public Rust API.
Please deprecate the old API instead (if possible), or mark the PR with a ! to indicate a breaking change.

cargo-semver-checks summary

[aborgna-q]

I think semver checks are working already?
https://github.com/CQCL/hugr/actions/runs/13155044605/job/36710195910

Note that workflow calls are executed in a separate runner, so installing things here won't change the runtime.
I had to add an apt-dependencies parameter to the workflow to deal with capnproto before.
https://github.com/CQCL/hugrverse-actions/blob/97c4297b1a493b5bf6827ba38b6f7d7fa4891348/.github/workflows/rs-semver-checks.yml#L11-L15

[aborgna-q]

Uhm. I see it failing here.

https://github.com/CQCL/hugr/actions/runs/13155673562/job/36712137197#step:10:162

Do you know why it was working before? Is this a spurious error?

[doug-q]

Uhm. I see it failing here.

https://github.com/CQCL/hugr/actions/runs/13155673562/job/36712137197#step:10:162

Do you know why it was working before? Is this a spurious error?

I think it really fails earlier:
https://github.com/CQCL/hugr/actions/runs/13155673562/job/36712137197#step:10:162

I suspect that it has been broken since the github-runner-llvm issue

[doug-q]

I think semver checks are working already? https://github.com/CQCL/hugr/actions/runs/13155044605/job/36710195910

Note that workflow calls are executed in a separate runner, so installing things here won't change the runtime. I had to add an apt-dependencies parameter to the workflow to deal with capnproto before. https://github.com/CQCL/hugrverse-actions/blob/97c4297b1a493b5bf6827ba38b6f7d7fa4891348/.github/workflows/rs-semver-checks.yml#L11-L15

Yes I agree this PR doesn't work. The best solution I can think of is to add env parameter to hugrverse-actions/rs-semver-checks, then set LLVM_SYS_140_PREFIX.

[aborgna-q]

See #1909