1 files changed, 3 insertions, 6 deletions
diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 4173588ac52..0e5a4a866e8 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -3,9 +3,7 @@
 assert zlib != null;
 
 let
-  version = "1.6.34";
   patchVersion = "1.6.34";
-  sha256 = "1xjr0v34fyjgnhvaa1zixcpx5yvxcg4zwvfh0fyklfyfj86rc7ig";
   patch_src = fetchurl {
     url = "mirror://sourceforge/libpng-apng/libpng-${patchVersion}-apng.patch.gz";
     sha256 = "1ha4npf9mfrzp0srg8a5amks5ww84xzfpjbsj8k3yjjpai798qg6";
@@ -14,10 +12,11 @@ let
 
 in stdenv.mkDerivation rec {
   name = "libpng" + whenPatched "-apng" + "-${version}";
+  version = "1.6.34";
 
   src = fetchurl {
     url = "mirror://sourceforge/libpng/libpng-${version}.tar.xz";
-    inherit sha256;
+    sha256 = "1xjr0v34fyjgnhvaa1zixcpx5yvxcg4zwvfh0fyklfyfj86rc7ig";
   };
   postPatch = whenPatched "gunzip < ${patch_src} | patch -Np1";
 
@@ -26,9 +25,7 @@ in stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ zlib ];
 
-  # it's hard to cross-run tests and some check programs didn't compile anyway
-  makeFlags = stdenv.lib.optional (!doCheck) "check_PROGRAMS=";
-  doCheck = true; # not cross;
+  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
 
   passthru = { inherit zlib; };