1 files changed, 47 insertions, 0 deletions
diff --git a/pkgs/build-support/testers/hasPkgConfigModule/tester.nix b/pkgs/build-support/testers/hasPkgConfigModule/tester.nix
new file mode 100644
index 000000000000..c8342cdd5c3b
--- /dev/null
+++ b/pkgs/build-support/testers/hasPkgConfigModule/tester.nix
@@ -0,0 +1,47 @@
+# Static arguments
+{ runCommand, pkg-config }:
+
+# Tester arguments
+{ package,
+  moduleName,
+  testName ? "check-pkg-config-${moduleName}",
+}:
+
+runCommand testName {
+    nativeBuildInputs = [ pkg-config ];
+    buildInputs = [ package ];
+    inherit moduleName;
+    meta = {
+      description = "Test whether ${package.name} exposes pkg-config module ${moduleName}";
+    }
+    # 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;
+  } ''
+    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 $version"
+      echo "$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
+  ''