system/home/progs/exa.nix

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

with lib;

let
  cfg = config.progs.exa;
  zsh = config.shell.zsh;

  exaPackage = pkgs.exa-minimal;
  defaultArgs = "--icons --classify";
  bin = "${exaPackage}/bin/exa ${defaultArgs}";
in
{
  options.progs.exa = {
    enable = mkOption {
      type = types.bool;
      default = false;
      description = "Add and configure exa, a modern replacement for ls";
    };
  };

  config = mkIf cfg.enable {
    programs.exa = {
      enable = true;
      package = exaPackage;
    };

    programs.zsh.shellAliases = mkIf zsh.enable rec {
      ls = "${bin} --oneline";
      la = "${ls} --all";
      lt = "${bin} --tree --level=3";
      ll = "${bin} --long --header";
      lla = "${ll} --all";
    };
  };
}