these 4 derivations will be built:
  /nix/store/iprn2rf3b33yga7drscc1avhgavd7qc0-iets-0.1.0.drv
  /nix/store/qj44ji1six43lwm8f8c9sjg0r4a5rddj-iets-fuzz-diff-0.0.0.drv
  /nix/store/265b54x44qi9mriz2gzshdx4hk0s9kj5-iets-conformance-adapter.drv
  /nix/store/vp14bxvcl88hckyrak0yw2pifmj58cbn-nix-conformance-iets.drv