core/pkgs/build-support/testers/hasPkgConfigModules/tester.nix

# 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
''