these 4 derivations will be built:
  /nix/store/brqdg75fja0a2dl12wqzhdb40hc49swd-iets-0.1.0.drv
  /nix/store/qj3d4xcsmsm24ccwa8kib8nypv7722dz-iets-fuzz-diff-0.0.0.drv
  /nix/store/n5h742r4vsw65vn95s37qbza227fnraa-iets-conformance-adapter.drv
  /nix/store/wpj2yckcg5xd5v4a9n6nrfkgdrhjwryw-nix-conformance-iets.drv