home.file.".ssh/allowed_signers".text = "* ${builtins.readFile "${homeDirectory}/.ssh/id_ed25519.pub"}";

        commit = {gpgsign = true;};

        gpg = {
          format = "ssh";
          allowedSignersFile = "${homeDirectory}/.ssh/allowed_signers";
        };

        user = {signingkey = "${homeDirectory}/.ssh/id_ed25519.pub";};