joelteon/nixpkgs — pull request #12 by krisajenkins (2014-12-27 20:37:07+00:00)
Title: A working version of Python 2.7.

Confession: I'm stumbling around Nix like a drunken monkey, so this may not be The Right Way To Do It. Nevertheless, this patch gets python 2.7 working from the pure-darwin branch. And with it, a lot of packages that depend on python. So I figure it's worth sending the details back upstream... :-)