nixos-config/modules/system/upgrades/default.nix

{ hostName, ... }:
{
    nix.optimise.automatic = true;
    nix.settings.auto-optimise-store = true;
    nix.optimise.dates = [ "03:45" ];
    system.autoUpgrade = {
        enable = true;
        dates = "04:00";
        persistent = true;
        flake = "github:Moe1369/nixos-config#${hostName}";
        flags = [
            "--update-input" "nixpkgs"
            "--update-input" "home-manager"
            "--update-input" "jovian"
            "--update-input" "nix-flatpak"
            "-L"
            "--commit-lock-file"
        ];
        allowReboot = false;
    };
}