these 4 derivations will be built:
  /nix/store/2i51glb3f8pvsnjqz3nfq5pbyzp93db8-iets-fuzz-diff-0.0.0.drv
  /nix/store/sh16gh8pp92zfwqmsqfcvla2vqsz5das-iets-0.1.0.drv
  /nix/store/wq4c02bc581b5ajpa0ca6gh68k44kq8x-iets-conformance-adapter.drv
  /nix/store/h905b6i8mhyv93xwnyrg43jj1ll48321-nix-conformance-iets.drv