(for PR #27915)

2025-05-23 15:23.54: New job: Lint
2025-05-23 15:23.54: Checking out commit fe74d4a8. To reproduce:
                       git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27915/head" && git reset --hard fe74d4a8
2025-05-23 15:23.54: Exec: "cp" "-a" "--" "/var/lib/ocurrent/var/git/opam-repository.git-a0bc4b41ddb868605dc1500002c27cfa79faf4389fe53b6754817ea16b48d458/.git" 
                           "/tmp/git-checkout11398ca0"
2025-05-23 15:23.56: Exec: "git" "-C" "/tmp/git-checkout11398ca0" "submodule" 
                           "deinit" "--force" "--all"
2025-05-23 15:23.56: Exec: "git" "-C" "/tmp/git-checkout11398ca0" "reset" 
                           "--hard" "-q" "fe74d4a82a3b007f1e757e592b5afa175d7438cd"
2025-05-23 15:23.58: Exec: "git" "-c" "protocol.file.allow=always" "-C" 
                           "/tmp/git-checkout11398ca0" "submodule" "update" 
                           "--recursive" "--init" "--no-fetch"
2025-05-23 15:23.59: Exec: "git" "merge" "-q" "--" "d4d1aa63ab7830b868cb8cbd85e076c699d8eb06"

To reproduce locally, on the opam-repository PR branch, run: 

    opam pin opam-ci-check git+https://github.com/ocurrent/opam-repo-ci.git#live
    opam-ci-check lint --opam-repository . ocaml.5.4.0:new=false ocaml-base-compiler.5.4.0~alpha1:new=false ocaml-compiler.5.4.0~alpha1:new=false ocaml-variants.5.4.0~alpha1+options:new=false

2025-05-23 15:23.59: Exec: "opam-ci-check" "lint" "--opam-repository" 
                           "." "ocaml.5.4.0:new=false" "ocaml-base-compiler.5.4.0~alpha1:new=false" 
                           "ocaml-compiler.5.4.0~alpha1:new=false" "ocaml-variants.5.4.0~alpha1+options:new=false"
Linting opam-repository at /tmp/git-checkout11398ca0/. ...
Error in ocaml.5.4.0: conf packages should always use the 'conf-' name prefix, the 'conf' flag, and the 'depext' field all together, but this package only has the 'conf' flag
Error in ocaml-base-compiler.5.4.0~alpha1: No package source directory provided.
Warning in ocaml-compiler.5.4.0~alpha1: The package has a dune-project file but no explicit dependency on dune was found.
Error in ocaml-variants.5.4.0~alpha1+options: No package source directory provided.
2025-05-23 15:24.30: Job failed: Error in ocaml-variants.5.4.0~alpha1+options: No package source directory provided.
Warning in ocaml-compiler.5.4.0~alpha1: The package has a dune-project file but no explicit dependency on dune was found.
Error in ocaml-base-compiler.5.4.0~alpha1: No package source directory provided.
Error in ocaml.5.4.0: conf packages should always use the 'conf-' name prefix, the 'conf' flag, and the 'depext' field all together, but this package only has the 'conf' flag