fribidi: add pkgConfigModules metadata and corresponding test

pkgs/development/libraries/fribidi/default.nix

@@ -6,9 +6,10 @@
 , pkg-config
 , fixDarwinDylibNames
 , python3
+, testers
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "fribidi";
   version = "1.0.13";
 
@@ -16,7 +17,7 @@ stdenv.mkDerivation rec {
 
   # NOTE: Only URL tarball has "Have pre-generated man pages: true", which works-around upstream usage of some rare ancient `c2man` fossil application.
   src = fetchurl {
-    url = "https://github.com/fribidi/fribidi/releases/download/v${version}/${pname}-${version}.tar.xz";
+    url = with finalAttrs; "https://github.com/fribidi/fribidi/releases/download/v${version}/${pname}-${version}.tar.xz";
     sha256 = "sha256-f6FsgMgb1iL3sZjTE1baE5zDGKY/x3YSF69BMJA/VKI=";
   };
 
@@ -32,10 +33,17 @@ stdenv.mkDerivation rec {
   doCheck = true;
   nativeCheckInputs = [ python3 ];
 
+  passthru.tests = {
+    pkg-config = testers.hasPkgConfigModules {
+      package = finalAttrs.finalPackage;
+    };
+  };
+
   meta = with lib; {
     homepage = "https://github.com/fribidi/fribidi";
     description = "GNU implementation of the Unicode Bidirectional Algorithm (bidi)";
     license = licenses.lgpl21;
     platforms = platforms.unix;
+    pkgConfigModules = [ "fribidi" ];
   };
-}
+})