diff --git a/pkgs/development/libraries/libb2/default.nix b/pkgs/development/libraries/libb2/default.nix
index a461f5039aa..9e507188aad 100644
--- a/pkgs/development/libraries/libb2/default.nix
+++ b/pkgs/development/libraries/libb2/default.nix
@@ -4,16 +4,17 @@
 , autoreconfHook
 , libtool
 , pkg-config
+, testers
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "libb2";
   version = "0.98.1";
 
   src = fetchFromGitHub {
     owner = "BLAKE2";
     repo = "libb2";
-    rev = "refs/tags/v${version}";
+    rev = "refs/tags/v${finalAttrs.version}";
     sha256 = "0qj8aaqvfcavj1vj5asm4pqm03ap7q8x4c2fy83cqggvky0frgya";
   };
 
@@ -29,11 +30,14 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
+  passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+
   meta = with lib; {
     description = "The BLAKE2 family of cryptographic hash functions";
     homepage = "https://blake2.net/";
+    pkgConfigModules = [ "libb2" ];
     platforms = platforms.all;
     maintainers = with maintainers; [ dfoxfranke dotlambda ];
     license = licenses.cc0;
   };
-}
+})