anchor.diff:      vagrant
       jq
       mr
  +    htop
  +    wget
       nix-repl
       nix-prefetch-git
       nox
       rsync
       sloccount
       w3m
  +    isync # mbsync
       unison
       atool
       aspell
  
positive.code:     msmtp
      nmap
      haskellPackages.sizes
      ] ++ (if stdenv.isDarwin then [] else [
          gitAndTools.git-annex
          crawl
  
negative.code: in with pkgs; buildEnv {
    name = "bergey-env";
    paths= [
      ledger3
      gitAndTools.hub
      ripgrep
      notmuch
  