{ config, pkgs, ... }:
{
  # nixpkgs.config.packageOverrides = pkgs: {
  #   weechat = pkgs.weechat.override {
  #     extraBuildInputs = with pkgs; [
  #       pythonPackages.potr
  #     ];
  #   };
  # };

  systemd.services = {
    weechat = {
      description = "weechat session";
      path = [ pkgs.weechat pkgs.tmux pkgs.coreutils ];
      after = [ "networking.target" ];
      wantedBy = [ "multi-user.target" ];
      environment = {
        LANG = "en_US.utf8";
        LC_ALL = "en_US.utf8";
        TERM = "${pkgs.rxvt_unicode.terminfo}";
      };
      serviceConfig = {
        Type = "oneshot";
        User = "orbekk";
        RemainAfterExit = true;
        Environment = "TMUX_TMPDIR=/run/user/1000";
      };

      script = ''
        mkdir -p /run/user/1000
        tmux -2 new-session -d -s irc "${pkgs.weechat}/bin/weechat"
      '';

      preStop = ''
        # Gently shut down weechat.
        # -xf is needed to kill precisely weechat (and not this script).
        pkill -SIGTERM -xf "${pkgs.weechat}/bin/weechat"
        for i in {1..10}; do
          echo "Waiting for weechat to stop"
          pgrep -xlf "${pkgs.weechat}/bin/weechat" || break
          sleep 1
        done
        tmux kill-session -t irc || true
      '';
    };
  };
}