{ self, me, lib, ... }:

let
  inherit (lib) mkIf mkMerge;

  renardCache = {
    substituters = [ "https://cache.rnrd.eu" ];
    trusted-public-keys = [ "cache.rnrd.eu-1:6Q2MPTZ6ycAzWcc0VzXR+pKRlJ+6kfdQfj6iRsN5s1I=" ];
  };
in
{
  nix = {
    optimise = {
      automatic = true;
      dates = [ "06:00" ];
    };

    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 14d";
    };

    # add compat scripts to the environment,
    # to allow nixos-option to find the configuration
    nixPath = [
      "nixpkgs=${self}/compat"
      "nixos-config=${self}/compat/nixos"
    ];

    settings = mkMerge [
      {
        experimental-features = [ "flakes" "nix-command" ];
        trusted-users = [ "root" "mel" ];
      }
      (mkIf (!me.is.renard) renardCache)
    ];
  };
}