let
  sources = import ./npins;
  pkgs = import sources.nixpkgs-unstable {
    overlays = [
      (import "${sources.kat-pkgs}/overlay.nix")
      (import "${sources.lix-overlay}/overlay.nix" { lix = "${sources.lix}"; })
    ];
  };
in
pkgs.mkShell {
  packages = with pkgs; [
    npins
    colmena
  ];
}