{
  pkgs,
  lib,
  ...
}:
{
  hjem.users.leah.packages = with pkgs; [
    gh
    jujutsu
    difftastic
    watchman
    hwatch
  ];

  hjem.users.leah.environment.sessionVariables = {
    DFT_DISPLAY = "inline";
    HWATCH = "--no-title --color --mouse --keymap q=force_cancel";
  };

  hjem.users.leah.rum.programs.git = {
    enable = true;
    integrations.difftastic.enable = true;

    settings = {
      advice = {
        detachedHead = true;
      };
      
      init.defaultBranch = "main";
      push.autoSetupRemote = true;
      url."https://github.com/".insteadOf = "gh:";
      gpg.format = "ssh";

      # GH integration
      credential =
        let
          github.helper = "!${lib.getExe pkgs.gh} auth git-credential";
        in
        {
          "https://github.com" = github;
          "https://gist.github.com" = github;
        };

      user = {
        name = "Leah Amelia Chen";
        email = "hi@pluie.me";
        signingKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC7uJGE2/25M4a3DIVxtnTA5INqWsFGw+49qHXaN/kqy";
      };
    };
  };

  hjem.users.leah.ext.programs.jujutsu = {
    enable = true;
    settings = {
      user = {
        name = "Leah Amelia Chen";
        email = "hi@pluie.me";
      };

      ui = {
        default-command = [ "log" ];
        diff-formatter = "difft";
        pager = "${lib.getExe pkgs.moor} -no-linenumbers";
        log-word-wrap = true;
      };

      aliases = {
        tug = [
          "bookmark"
          "move"
          "--from"
          "closest_bookmark(@-)"
          "--to"
          "closest_pushable(@-)"
        ];

        monitor = [
          "util"
          "exec"
          "--"
          "hwatch"
          "--exec"
          "--limit=1"
          "--"
          "jj"
          "--ignore-working-copy"
          "log"
          "--color=always"
          "-r"
          "current()"
        ];
      };

      revsets = {
        short-prefixes = "current()";
      };

      revset-aliases = {
        "current()" = "(trunk()..@)::";
        "closest_bookmark(to)" = "heads(::to & bookmarks())";
        "closest_pushable(to)" =
          "heads(::to & mutable() & ~description(exact:\"\") & (~empty() | merges()))";
      };

      template-aliases = {
        "format_short_id(id)" = ''id.shortest(12).prefix() ++ "'" ++ id.shortest(12).rest()'';
        "format_timestamp(timestamp)" = "timestamp.ago()";
        "commit_timestamp(commit)" = "commit.author().timestamp()";
        "format_short_signature(signature)" = "signature.name()";
      };

      templates = {
        git_push_bookmark = ''"pluie/jj-" ++ change_id.short()'';
      };

      fix.tools = {
        nixfmt = {
          command = [ "nixfmt" ];
          patterns = [ "glob:'**/*.nix'" ];
        };
      };

      signing = {
        behavior = "drop";
        backend = "ssh";
        key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC7uJGE2/25M4a3DIVxtnTA5INqWsFGw+49qHXaN/kqy";
      };

      git = {
        sign-on-push = true;
        private-commits = "description(glob:'wip:*')";
      };

      fsmonitor = {
        backend = "watchman";
        watchman.register-snapshot-trigger = true;
      };
    };
  };
}