config/profiles/auto-upgrade.nix

{ config, pkgs, lib, inputs, ... }:

# TODO: make /etc/nixos a symlink to the in-store flake? - bad idea, horrible error recovery
# TODO: make /etc/nixos a writeable checkout of repo?

{

  system.autoUpgrade.enable = true;
  #system.autoUpgrade.allowReboot = true; # reboot after a kernel (module) or initrd upgrade, consider also setting `rebootWindow`

  environment.etc."current-system-flake".source = inputs.self; # the plan was to allow me to locate the new flake.lock, but alas https://github.com/NixOS/nix/issues/6895

  #system.autoUpgrade.flake = inputs.self.outPath; # a nix store path
  #system.autoUpgrade.flake = "github:pbsds/nix-config"; # TODO: use this instead?
  system.autoUpgrade.flake = "git+https://gitea.noximilien.pbsds.net/pbsds/config.git";

  system.autoUpgrade.flags = [
    "-L" # print build logs
    "--no-write-lock-file" # no write new flakelock, as the in-store flake is read-only
    # fetch new inputs
    #"--recreate-lock-file" # update all
    "--update-input" "nixpkgs-edge" "--update-input" "home-manager-edge"
    "--update-input" "nixpkgs-2405" "--update-input" "home-manager-2405"
    "--update-input" "nixpkgs-2311" "--update-input" "home-manager-2311"
    "--update-input" "nix-index-database"
    "--update-input" "nixos-hardware"
  ];

  # lots of "empty" updates
  boot.loader.grub.configurationLimit = 15;
  boot.loader.systemd-boot.configurationLimit = 15;
  boot.loader.raspberryPi.uboot.configurationLimit = 15;
  boot.loader.generic-extlinux-compatible.configurationLimit = 15;

}