{ inputs', lib, ... }:
let
  inherit (lib)
    flip
    mapAttrs;
in
{
  nix.registry =
    flip mapAttrs inputs'
      (
        n: flake: {inherit flake;}
      );
  nix.settings = {
    substituters = [
      "https://cache.nixos.org/"
      "https://hydra.redalder.org/"
    ];
    trusted-public-keys = [
      "redalder-nix-cache-1:8t4zBJWgVtrfAOJ45iNHEqA/dDFV47Sr1sGa8ME9ru0="
    ];
    experimental-features = [ "flakes" "nix-command" ];
  };
  nixpkgs.config.allowUnfree = true;
}