these 3 derivations will be built:
  /nix/store/5sw76nh8qk3x4hcrkzv58z8azsp9sh6w-zat-0.5.4-vendor.drv
  /nix/store/5sj48pdb4m7igiaf4hr2q5m7lx439haf-zat-0.5.4.drv
  /nix/store/l5r1cwfqakim604m0fhr6s9l2xfab5dg-check-zat.drv
these 2 paths will be fetched (0.0 KiB download, 10.8 MiB unpacked):
  /nix/store/9hk7nzvqrva80y2b9ijcv484j7vqa03f-source
  /nix/store/3ikq0qka7js98dms771sjgd4pcddqnpb-zat-0.5.4-vendor-staging