{ config, pkgs, ... }:
let
  git_user = "Grimmauld";
in
{
  environment.systemPackages = with pkgs; [
    (writeShellScriptBin "silent-add" "git add --intent-to-add $@ ; git update-index --assume-unchanged $@")
    (writeShellScriptBin "systemd-owner" "systemctl show -pUser,UID $@")
    (writeShellScriptBin "nix-referrers" "nix-store --query --referrers $@")
    mkpasswd
    node2nix
  ];

  programs.git = {
    enable = true;
    lfs.enable = true;
    config = {
      init.defaultBranch = "main";
      credential.username = git_user;
      core.editor = "${pkgs.neovim}/bin/nvim";
      user.name = git_user;
      user.email = "${git_user}@grimmauld.de";
    };
  };

  programs.tmux = {
    enable = true;
    historyLimit = 42000;
    #keyMode = "vi";
  };

  programs.neovim = {
    enable = true;
    viAlias = true;
    defaultEditor = true;
    configure = {
      customRC = ''
        set number
        set hidden
        set nocompatible
      '';
      packages.myVimPackage = with pkgs.vimPlugins; {
        # loaded on launch
        start = [
          vim-nix
          vim-scala
          fugitive
          autoclose-nvim
        ];
        # manually loadable by calling `:packadd $plugin-name`
        opt = [ ];
      };
    };
  };

  programs.xonsh.enable = true;
}