{
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib.meta) getExe;

  toml = pkgs.formats.toml {};
  jj-config = toml.generate "config.toml" {
    user = {
      name = "Bloxx12";
      email = "charlie@charlieroot.dev";
    };

    ui = {
      pager = ["${getExe pkgs.bat}" "--plain"];
      default-command = "log";
      movement.edit = true;

      diff.tool = ["${getExe pkgs.difft}" "--color" "always" "$left" "$right"];
    };
    # FIXME: do this with agenix
    # "--scope" = [
    #   {
    #     "--when.repositories" = ["~/repos/projects/uni"];
    #     user = {
    #       # TODO
    #       name = "";
    #       email = "";
    #     };
    #   }
    #   {
    #     "--when.repositories" = ["~/repos/projects/uni/"];
    #     user = {
    #       # TODO
    #       name = "";
    #       email = "";
    #     };
    #   }
    # ];
    git.push-new-bookmarks = true;

    signing = {
      behaviour = "own";
      backend = "ssh";
      key = ["ecdsa-sha2-nistp521 AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAAWEDj/Yib6Mqs016jx7rtecWpytwfVl28eoHtPYCM9TVLq81VIHJSN37lbkc/JjiXCdIJy2Ta3A3CVV5k3Z37NbgAu23oKA2OcHQNaRTLtqWlcBf9fk9suOkP1A3NzAqzivFpBnZm3ytaXwU8LBJqxOtNqZcFVruO6fZxJtg2uE34mAw=="];
    };

    aliases = {
      c = ["commit"];
      ci = ["commit" "--interactive"];

      e = ["edit"];

      # "new bookmark"
      nb = ["bookmark" "create" "-r @-"];

      pull = ["git" "fetch"];
      push = ["git" "push" "--allow-new"];

      r = ["rebase"];
      s = ["squash"];
      si = ["squash" "--interactive"];

      tug = ["bookmark" "move" "--from" "closest_bookmark(@-)" "--to" "@-"];
    };
    revset-aliases = {
      "closest_bookmark(to)" = "heads(::to & bookmarks())";
    };

    templates = {
      draft_commit_description = ''
        concat(
          coalesce(description, "\n"),
          surround(
            "\nJJ: This commit contains the following changes:\n", "",
            indent("JJ:     ", diff.stat(72)),
          ),
          "\nJJ: ignore-rest\n",
          diff.git(),
        )
      '';
    };
    template-aliases = {
      "format_short_id(id)" = "id.shortest()";
    };
  };

  jj-wrapped = pkgs.symlinkJoin {
    name = "jj-wrapped";
    paths = [pkgs.jj];
    nativeBuildInputs = [pkgs.makeWrapper];
    postBuild = ''
      wrapProgram $out/bin/mako --add-flags "\
      --config ${jj-config}

    '';
  };
in {
  environment.systemPackages = [jj-wrapped];
}