{ config, pkgs, ... }:
{
  environment.systemPackages = with pkgs; [
    pwgen
    pv
    tree
    tmux
    psmisc
    ncdu
    git
    file
    sqlite
    usbutils
    entr
    ffmpeg
    gcc
    python3
    hugo
    openssl
    wget
    lm_sensors
    htop
    zip
    unzip
    dnsutils
    tcpdump
    rsync

    (writeScriptBin "nix-roots" "nix-store --gc --print-roots | grep -v ^/proc/")

    (vim_configurable.customize {
      name = "vim";
      vimrcConfig.customRC = ''
        syntax enable
        filetype plugin indent on
        set nowrap ruler scrolloff=9 backspace=start,indent
      '';
    })

    (writeScriptBin "zfsram" ''
      #!${pkgs.python3}/bin/python
      for ln in open('/proc/spl/kstat/zfs/arcstats').readlines():
          if ln.startswith('size '):
              print(str(int(ln.split(' ')[-1])/(1024*1024*1024))[:5],'GB')
    '')
  ];

  programs.bash.interactiveShellInit = ''
    stty -ixon
    echo $XDG_SESSION_TYPE
    alias p=python3
    alias buildsys='nix build -f "<nixpkgs/nixos>" --no-link system'

    alias channel='
        echo " Local: $(cat /nix/var/nix/profiles/per-user/root/channels/nixos/.git-revision)";\
        echo "Remote: $(curl --silent -L https://channels.nixos.org/nixos-unstable/git-revision)"
    '

    function _update_ps1() {
        PS1="\n$(${pkgs.powerline-go}/bin/powerline-go \
                    -mode=flat \
                    -colorize-hostname \
                    -cwd-mode=dironly \
                    -modules=user,host,cwd,nix-shell,git,jobs \
                    # -git-assume-unchanged-size 0 \
        )$ "
    }
    PROMPT_COMMAND="_update_ps1; $PROMPT_COMMAND"
  '';
}