{
  fetchFinancier = { fetchgit }:
    let
      financierLockData = (builtins.fromJSON
        (builtins.readFile ./flake.lock)).nodes.financier.locked;
      inherit (financierLockData) narHash owner repo rev;
      url = "https://gitlab.com/${owner}/${repo}.git";
    in fetchgit {
      inherit url rev;
      sha256 = narHash;
    };
}