This is my flakeless configuration for macOS using nix
{ pkgs, ... }:
{
  home.packages = [ pkgs.pijul ];

  xdg.configFile.pijul.text = ''
    [author]
    name = "WeetHet"
    full_name = "WeetHet"
    email = "stas.ale66@gmail.com"
  '';
}