ocaml / ocaml/setup-ocaml

Failing depext install on windows

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Description

eg https://github.com/rocq-community/rocq-lsp/actions/runs/25496448387/job/74817386293

The following system packages will first need to be installed:
    mingw64-i686-gcc-core mingw64-i686-gmp mingw64-x86_64-gmp pkgconf

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>

+ C:\.opam\.cygwin\setup-x86_64.exe "--root" "C:\\.opam\\.cygwin\\root" "--quiet-mode" "noinput" "--no-shortcuts" "--no-startmenu" "--no-desktop" "--no-admin" "--no-version-check" "--no-write-registry" "--packages" "mingw64-i686-gcc-core,mingw64-i686-gmp,mingw64-x86_64-gmp,pkgconf" "--symlink-type" "native" "--upgrade-also" "--only-site" "--site" "https://cygwin.mirror.constant.com/" "--local-package-dir" "C:\\.opam\\.cygwin\\cache"
Error: Process completed with exit code 1.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked Windows workflow run and trace the depext installation step in setup-ocaml. Check how the listed Cygwin packages are selected and installed; done means the Windows workflow installs its external dependencies successfully without exit code 1.

Written by the indexing model from the issue text.

Assessment

Tech stack
github-actions, ocaml
Domain
ci-cd
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
45/100

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