hdrhistogram_c: improve pkg-config integration

pkgs/by-name/hd/hdrhistogram_c/package.nix

@@ -4,6 +4,9 @@
   fetchFromGitHub,
   cmake,
   zlib,
+  nix-update-script,
+  testers,
+  validatePkgConfig,
 }:
 
 stdenv.mkDerivation (finalAttrs: {
@@ -18,15 +21,28 @@ stdenv.mkDerivation (finalAttrs: {
   };
 
   buildInputs = [ zlib ];
-  nativeBuildInputs = [ cmake ];
+  nativeBuildInputs = [
+    cmake
+    validatePkgConfig
+  ];
 
   doCheck = true;
 
+  passthru = {
+    updateScript = nix-update-script { };
+
+    tests.pkg-config = testers.hasPkgConfigModules {
+      package = finalAttrs.finalPackage;
+      versionCheck = true;
+    };
+  };
+
   meta = {
     description = "C port or High Dynamic Range (HDR) Histogram";
     homepage = "https://github.com/HdrHistogram/HdrHistogram_c";
     changelog = "https://github.com/HdrHistogram/HdrHistogram_c/releases/tag/${finalAttrs.version}";
     license = lib.licenses.publicDomain;
     maintainers = with lib.maintainers; [ jherland ];
+    pkgConfigModules = [ "hdr_histogram" ];
   };
 })