# Static arguments
{ lib, runCommand, pkg-config }:

# Tester arguments
{ package,
  moduleNames ? package.meta.pkgConfigModules,
  testName ? "check-pkg-config-${lib.concatStringsSep "-" moduleNames}",
}:

runCommand testName {
    nativeBuildInputs = [ pkg-config ];
    buildInputs = [ package ];
    inherit moduleNames;
    meta = {
      description = "Test whether ${package.name} exposes pkg-config modules ${lib.concatStringsSep ", " moduleNames}.";
    }
    # Make sure licensing info etc is preserved, as this is a concern for e.g. cache.nixos.org,
    # as hydra can't check this meta info in dependencies.
    # The test itself is just Nixpkgs, with MIT license.
    // builtins.intersectAttrs
        {
          available = throw "unused";
          broken = throw "unused";
          insecure = throw "unused";
          license = throw "unused";
          maintainers = throw "unused";
          platforms = throw "unused";
          unfree = throw "unused";
          unsupported = throw "unused";
        }
        package.meta;
  } ''
    touch "$out"
    for moduleName in $moduleNames; do
      echo "checking pkg-config module $moduleName in $buildInputs"
      set +e
      version="$($PKG_CONFIG --modversion $moduleName)"
      r=$?
      set -e
      if [[ $r = 0 ]]; then
        echo "✅ pkg-config module $moduleName exists and has version $version"
        printf '%s\t%s\n' "$moduleName" "$version" >> "$out"
      else
        echo "These modules were available in the input propagation closure:"
        $PKG_CONFIG --list-all
        echo "❌ pkg-config module $moduleName was not found"
        false
      fi
    done
  ''