- 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/psyco/default.nix

@@ -1,14 +0,0 @@
-{stdenv, fetchurl, python}:
-
-assert stdenv.system == "i686-linux";
-
-stdenv.mkDerivation {
-  name = "psyco-1.5.2";
-  src = fetchurl {
-    url = mirror://sourceforge/psyco/psyco-1.5.2-src.tar.gz;
-    md5 = "bceb17423d06b573dc7b875d34e79417";
-  };
-  buildInputs = [python];
-  buildPhase = "true";
-  installPhase = "python ./setup.py install --prefix=$out";
-}