* stdenv.mkDerivation: add any attributes in the "passthru" attribute

  set to the result, but don't use them in the actual derivation (so
  they're not inputs).  Useful to pass through extra attributes that
  are not inputs, but should be made available to Nix expressions
  using the derivation (e.g., in assertions).

svn path=/nixpkgs/trunk/; revision=6521

1 files changed, 2 insertions, 0 deletions

diff --git a/pkgs/development/libraries/qt-3/default.nix b/pkgs/development/libraries/qt-3/default.nix
index dd115227c29..fe707997758 100644
--- a/pkgs/development/libraries/qt-3/default.nix
+++ b/pkgs/development/libraries/qt-3/default.nix
@@ -57,4 +57,6 @@ stdenv.mkDerivation {
     # randr.h and Xrandr.h need not be in the same prefix.
     ./xrandr.patch
   ];
+
+  passthru = {inherit mysqlSupport;};
 }