No OCaml base compiler packages matched the version 5.1.1 in the opam-repository.

The process 'D:\cygwin\wrapperbin\opam.cmd' failed with exit code 20

The run was canceled by @zoj613.

The operation was canceled.

The run was canceled by @zoj613.

The operation was canceled.

The run was canceled by @zoj613.

The operation was canceled.

The run was canceled by @zoj613.

The operation was canceled.

An error has been caught in some system package index files, so the system package index files have been re-synchronised, and the system package installation has been retried: the process 'd:\cygwin\wrapperbin\opam.cmd' failed with exit code 20

Failed to save: Unable to reserve cache with key v1-setup-ocaml-cygwin-1-3.5.3-2024-15, another job may be creating this cache. More details: Cache already exists. Scope: refs/pull/2/merge, Key: v1-setup-ocaml-cygwin-1-3.5.3-2024-15, Version: d375420c4542511a95bf863d5f333f8fe2944374e13e155c8bdd389fb56fb6d4

darcs has been deprecated because it depends on GHC 8.10 to build!