let
  sources = import ./npins;

  nixpkgs = sources.nixpkgs;
  pkgs = import nixpkgs { };
  inherit (pkgs) lib;
  # lib = import ./lib { inherit pkgs; };
  inherit (import ./lib { inherit pkgs; }) mkNixPath fromSources;

  nixPath = builtins.concatStringsSep ":" (mkNixPath
    ({
      personal = ./packages;
      nixpkgs-overlays = ./overlays;
      private = ./private;
    } // (fromSources sources))
  );
in
pkgs.mkShell
{

  name = "nixfiles-shell";

  buildInputs = with pkgs; [
    npins
    (pkgs.callPackage "${sources.agenix}/pkgs/agenix.nix" { })
    (import sources.home-manager { inherit pkgs; }).home-manager
  ];

  shellHook = ''
    export NIX_PATH="${nixPath}";
  '';

}