* Give Python 3.1 a lower priority so that it isn't installed by   default when you do "nix-env -i python" and to allow it to be   installed in the same profile as Python 2.x. * Disambiguate between the variants of Python 2.x.
* Give Python 3.1 a lower priority so that it isn't installed by
  default when you do "nix-env -i python" and to allow it to be
  installed in the same profile as Python 2.x.
* Disambiguate between the variants of Python 2.x.

svn path=/nixpkgs/trunk/; revision=21237

SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,triton/triton,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs