these 4 derivations will be built:
  /nix/store/wikfsd1ln19dy3casshnrm4ci1r2xd4j-iets-0.1.0.drv
  /nix/store/wvzq053s7h07kdxw23hwbxpv3sind52q-iets-fuzz-diff-0.0.0.drv
  /nix/store/9x4wsc4px7rsfpap62fi9wwa69xwmfir-iets-conformance-adapter.drv
  /nix/store/zp9qdzdvn0ld813vhxyycs44jb6qvg84-nix-conformance-iets.drv