anchor.diff:  #  mesos-dns = goPackages.mesos-dns.bin // { outputs = [ "bin" ]; };
   #
   #  nix-exec = callPackage ../development/interpreters/nix-exec {
  -#    git = gitMinimal;
  -#
   #    nix = nixUnstable;
   #  };
   #
  
positive.code:   gitAndTools = recurseIntoAttrs (callPackage ../applications/version-management/git-and-tools {});
  
    inherit (pkgs.gitAndTools) git gitFull gitSVN git-cola svn2git git-radar transcrypt;
  
    gitMinimal = git.override {
      withManual = false;
      pythonSupport = false;
    };
  #
  #  gitRepo = callPackage ../applications/version-management/git-repo {
  #    python = python27;
  
negative.code: 
    fetchdarcs = callPackage ../build-support/fetchdarcs { };
  
    fetchgit = callPackage ../build-support/fetchgit { };
  
    fetchgitPrivate = callPackage ../build-support/fetchgit/private.nix { };
  
  