{systemPkgs, ...}: {
  nix = {
    settings = {
      auto-optimise-store = true;
      experimental-features = "nix-command flakes";
    };
    optimise = {
      automatic = true;
      dates = ["weekly"];
    };
    registry = {
      agenix = {
        from = {
          id = "agenix";
          type = "indirect";
        };
        to = {
          owner = "ryantm";
          repo = "agenix";
          type = "github";
        };
      };
      # Write the system's nixpkgs into the registry to avoid mixing nixpkgs versions
      # https://dataswamp.org/~solene/2022-07-20-nixos-flakes-command-sync-with-system.html
      system.flake = systemPkgs;
    };
    # I removed this in the past since I thought that I didn't need it, but turns out comma does :)
    nixPath = ["nixpkgs=${systemPkgs}"];
  };
}