Versioning issue on nix

Hello, We have a fairly serious issue with the *nix end of the build system, namely GTK library versioning is broken so users are only getting 2.6 features even if they have newer libs. I have no clue how all that automagic junk works so someone else is going to have to chase down the issue, but I wanted to make sure it gets fixed as the cairo stuff is getting ready to go in and the poor cairo guy can't build php-gtk with 2.12 support to test stuff ;) Thanks, Elizabeth