- adding experimental python31 build

- cleanup python libraries:
 * moving all python libraries into a attr set into a directory
   so that expressions can be used for both: python 2.5 and 2.6 easily
 * disabling packages which don't build

svn path=/nixpkgs/trunk/; revision=21142

pkgs/development/python-modules/pycups/default.nix

@@ -1,17 +0,0 @@
-{stdenv, fetchurl, python, cups}:
-
-let
-  version = "1.9.49";
-in
-stdenv.mkDerivation {
-  name = "pycups-${version}";
-  src = fetchurl {
-    url = "http://cyberelk.net/tim/data/pycups/pycups-${version}.tar.bz2";
-    sha256 = "1gpp28sknjw5z4mzhaifc6hkfrlbm2y6w870q47ia8amnm05d3pk";
-  };
-  buildPhase = "";
-  installPhase = ''
-    CFLAGS=-DVERSION=\\\"${version}\\\" python ./setup.py install --prefix $out
-  '';
-  buildInputs = [ python cups ];
-}