Fix ci mac

[hhugo]

No description provided.

[vouillon]

I suspect we can just remove this code now.

[hhugo]

What makes you say that ?
I would imagine that we should wait on actions/runner-images#10984

[vouillon]

This seems to work for this PR: ocaml-wasm/wasm_of_ocaml#131 (ocaml-wasm/wasm_of_ocaml@4ee156e).

From what I understand, the latest macos runner image installs pkgconfig, which breaks the conf-pkg-config opam packages. So now, conf-pkg-config installs pkgconfig instead. This broke the CIs still using the previous runner image.

[hhugo]

Are you sure this is not working just because of caches ?
I see in your branch that you've removed the previous fix ocaml-wasm/wasm_of_ocaml@4ee156e #1737 but this PR and an attempt to fix the fix :)

[vouillon]

That's what I meant. You can probably just remove the previous fix.

This job is failing without the initial fix: https://github.com/ocsigen/js_of_ocaml/actions/runs/11916809033/job/33210339357

The initial fix no longer work for this job: https://github.com/ocsigen/js_of_ocaml/actions/runs/12012253626/job/33483052722

And this jobs was already using the newer image, at a much earlier date: https://github.com/coq/platform/actions/runs/11838273102/job/32987032575

[hhugo]

#1746