graphite2: Add meta.pkgConfigModules

pkgs/development/libraries/silgraphite/graphite2.nix

@@ -5,15 +5,15 @@
 , freetype
 , cmake
 , static ? stdenv.hostPlatform.isStatic
+, testers
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   version = "1.3.14";
   pname = "graphite2";
 
   src = fetchurl {
-    url = "https://github.com/silnrsi/graphite/releases/download/"
-      + "${version}/graphite2-${version}.tgz";
+    url = with finalAttrs; "https://github.com/silnrsi/graphite/releases/download/${version}/${pname}-${version}.tgz";
     sha256 = "1790ajyhk0ax8xxamnrk176gc9gvhadzy78qia4rd8jzm89ir7gr";
   };
 
@@ -46,12 +46,19 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
+  passthru.tests = {
+    pkg-config = testers.hasPkgConfigModules {
+      package = finalAttrs.finalPackage;
+    };
+  };
+
   meta = with lib; {
     description = "An advanced font engine";
     homepage = "https://graphite.sil.org/";
     license = licenses.lgpl21;
     maintainers = [ maintainers.raskin ];
+    pkgConfigModules = [ "graphite2" ];
     mainProgram = "gr2fonttest";
     platforms = platforms.unix ++ platforms.windows;
   };
-}
+})