these 4 derivations will be built:
  /nix/store/5gf99c73n943mhx17nkmyw2l6f332jvm-iets-0.1.0.drv
  /nix/store/qcm41jscdql9snb0q3qc24csw4gwfpld-iets-fuzz-diff-0.0.0.drv
  /nix/store/238s2xgc6i5z14k31jxhk46i8n73k2zg-iets-conformance-adapter.drv
  /nix/store/bnc5cxv2q3f6864wb0iqwk0f8xxi4gh0-nix-conformance-iets.drv