anchor.diff:      sha256 = "1cysix5k3wa6y7jjck3ckq3abls4gvz570s0v0hxv805nwki4i8d";
     };
   
  -  buildInputs = [ pythonPackages.python pythonPackages.wrapPython ];
  +  # Readline support is needed by bzrtools.
  +  propagatedBuildInputs = [ pythonPackages.python.modules.readline ];
   
  -  # Readline support is needed by bzrtools.
  -  pythonPath = [ pythonPackages.readline ];
  +  doCheck = false;
   
     # Bazaar can't find the certificates alone
     patches = [ ./add_certificates.patch ];
  
positive.code: { stdenv, fetchurl, pythonPackages }:
  
  stdenv.mkDerivation rec {
    version = "2.7";
    release = ".0";
    name = "bazaar-${version}${release}";
  
negative.code:       --subst-var-by certPath /etc/ssl/certs/ca-certificates.crt
    '';
  
    meta = {
      homepage = http://bazaar-vcs.org/;
      description = "A distributed version control system that Just Works";
  