these 3 derivations will be built:
  /nix/store/13yr2mik1c1kgyaym439gw8nvcvd108q-but-0.23.4-vendor.drv
  /nix/store/zapdib3hf71k3bxyk914923qp0c5aj2i-but-0.23.4.drv
  /nix/store/7r68hp2jvi2bsr11zb11havqikmk6gch-check-but.drv