these 4 derivations will be built:
  /nix/store/k5nvcjaiq09vy5p3qlbww7nv3c4njgnz-iets-fuzz-diff-0.0.0.drv
  /nix/store/y5dywn9znli4a7bb3licpfb6knccbmws-iets-0.1.0.drv
  /nix/store/xh7q1y8n90zgl8ms6rxdqlrc8yi167nw-iets-conformance-adapter.drv
  /nix/store/yvs92v3kx4d9ppfwpjizpcg3jmd4pifj-nix-conformance-iets.drv