nix/home-manager/users/root/default.nix

{ config, pkgs, ... }: {
  programs.git = {
    userName  = "albert";
    userEmail = "albert@sysctl.io";
    extraConfig = {
      core.askPass = "false";
      credential.helper = "cache --timeout=25920000";
      user.signingkey = "64F6C4EB46C4543A";
      commit.gpgsign = "true";
    };
  };
}