{ config, lib, pkgs, ... }:

let
  nmux = pkgs.writeShellScriptBin "nmux" ''
    export PATH="${lib.makeBinPath [ pkgs.inotify-tools pkgs.psmisc ]}:$PATH"
    exec ${pkgs.fish}/bin/fish --no-config ${./nmux.fish} "$@"
  '';
in
{
  home.packages = [ nmux ];

  # `nvim ARGS` typed in an interactive fish shell opens a new nmux session
  # running nvim with ARGS. Interactive-only (HM wraps this in
  # `status is-interactive`), so scripts, $EDITOR/$VISUAL consumers, and nmux
  # itself (fish --no-config above) get the real binary. `command nvim` bypasses.
  programs.fish.interactiveShellInit = ''
    function nvim --wraps nvim --description 'nvim in a new nmux session'
      nmux -- $argv
    end
  '';
}