these 2 derivations will be built:
  /nix/store/7y5giw2rvsi05ivz5fhqjr2994hdrfjn-trellis-0.6.17.drv
  /nix/store/0h48qfgqb3rsdb62yfs7l4s4w0fwl9qv-check-trellis.drv