inputs: { lib, ... }:
let
  # Taken from https://github.com/gytis-ivaskevicius/flake-utils-plus/blob/master/lib/options.nix
  inherit (lib) filterAttrs mapAttrs';
  flakes = filterAttrs (name: value: value ? outputs) inputs;
  nixRegistry = builtins.mapAttrs
    (name: v: { flake = v; })
    flakes;
in
{
  nix.registry = nixRegistry;
  environment.etc = mapAttrs'
    (name: value: { name = "nix/inputs/${name}"; value = { source = value.outPath; }; })
    inputs;
  nix.nixPath = [ "/etc/nix/inputs" ];
}