anchor.diff:            ++ go-env
             ++ node-env
             ++ ocaml-env
  -          ++ python2-env
  -          ++ scala-env;
  +          ++ python2-env;
         };
       };
     }
  
positive.code:     nox
    ];
  
    linux-tools = pkg-set {
      linux = [
        patchelf
        hwinfo
        lshw
        pciutils
        parted
        usbutils
      ];
    };
  
    network-tools = pkg-set {
      linux = [
        curl
        ipcalc
        nmap
        tcpdump
        wget
        bind
        traceroute
        pdsh
        openssh_with_kerberos
        heimdalFull
      ];
    };
  
    security-tools = pkg-set {
      linux = [
        keybase
        kbfs
        openssl
        openvpn
        gnupg
      ];
    };
  
    network-apps = pkg-set {
      linux = [
        insync
        ipfs
      ];
    };
  
    desktop-apps = pkg-set {
      linux = [
        calibre
        darktable
        hexchat
        i3lock
        slack
        skype
        spotify
        steam
        qtcreator
        gcolor2
        keybase-gui
        typora
        firefox
        (google-chrome.override {
          channel = "stable";
          pulseSupport = true;
          chromium = (chromium.override {
            channel = "stable";
            enablePepperFlash = true;
            pulseSupport = true;
          });
        })
      ];
    };
  
    dev-tools = pkg-set {
      all = [
        git
        jq
        bc
        (ctagsWrapped.ctagsWrapped.override { name = "ctags"; })
        fasd
        gnumake
        direnv
        unzip
        p7zip
        nvim
        gcc
        libstdcxx5
        awscli
        azure-cli
        gdb
        ncurses
        zip
        docker_compose
        aria2
        terraform
        packer
        kubectl
        pv
      ];
  
      linux = [
        sift
        fzf
        mysql
        rlwrap
        imagemagick
        sqlite
        file
        tree
        apg
        postgresql
        rxvt_unicode.terminfo
        lm_sensors
      ];
    };
  
    x11-tools = pkg-set {
      linux = [
        arandr
        autorandr
        feh
        imv
        pavucontrol
        rofi
        xclip
        xorg.xdpyinfo
        xorg.xev
        mplayer
      ];
    };
  
    node-env = [
      nodejs-8_x
  
negative.code: with pkgs;
  
  let
    nvim = pkgs.callPackage ./nvim {};
    eslint = pkgs.callPackage ./node/eslint.nix {};
    prettier = pkgs.callPackage ./node/prettier.nix {};
  