{ pkgs, ... }:
{
  services.gitolite = {
    enable = true;
    adminPubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINBkozy+X96u5ciX766bJ/AyQ3xm1tXZTIr5+4PVFZFi";
    user = "git";
    group = "git";
    extraGitoliteRc = ''
      # Make dirs/files group readable, needed for webserver/cgit. (Default
      # setting is 0077.)
      $RC{UMASK} = 0027;
      $RC{GIT_CONFIG_KEYS} = 'cgit.desc cgit.hide cgit.ignore cgit.owner';
      $RC{LOCAL_CODE} = "$rc{GL_ADMIN_BASE}/local";
      push( @{$RC{ENABLE}}, 'symbolic-ref' );
    '';
  };

  # let's make sure the default branch is `main'.
  systemd.tmpfiles.rules = [
    "C /var/lib/gitolite/.gitconfig - git git 0644 ${pkgs.writeText "gitolite-gitconfig" ''
      [init]
      	defaultBranch = main
    ''}"
  ];
}