* Fix evaluation problems.

svn path=/nixpkgs/branches/x-updates/; revision=22668
2010-07-19 22:24:26 +00:00
parent b8928b09fd
commit 9909fdbbd6
2 changed files with 7 additions and 8 deletions
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
  };
  
  propagatedBuildInputs = [ zlib ];
+
+  passthru = { inherit zlib; };
  
  meta = {
    description = "The official reference implementation for the PNG file format";