disable gdk-pixbuf test build on darwin

Changed files
+5
pkgs
development
libraries
gdk-pixbuf
+5
pkgs/development/libraries/gdk-pixbuf/default.nix
···
propagatedBuildInputs = [ glib libtiff libjpeg libpng jasper ];
+
# on darwin, tests don't link
+
preBuild = stdenv.lib.optionalString (stdenv.isDarwin && !doCheck) ''
+
substituteInPlace Makefile --replace "docs tests" "docs"
+
'';
+
configureFlags = "--with-libjasper --with-x11"
+ stdenv.lib.optionalString (gobjectIntrospection != null) " --enable-introspection=yes"
;