these 3 derivations will be built:
  /nix/store/bkcfwpzva29qr0d4pykkc4nz4p044dgn-ck-0.8.1-vendor.drv
  /nix/store/xnx2dh6xf78vr8wgkfyc9b467264qyf4-ck-0.8.1.drv
  /nix/store/qy9c1jpc85h78ffcg9mqds0a7mai0skl-check-ck.drv