these 4 derivations will be built:
  /nix/store/gk98mrpqy7khy707m84d2m08jwrzgjh9-iets-fuzz-diff-0.0.0.drv
  /nix/store/sxlcpib3air789jlwx4821ribr1c6dg9-iets-0.1.0.drv
  /nix/store/dyngmv3d9z8wmxjgqn7kyyp6zwpi32zi-iets-conformance-adapter.drv
  /nix/store/vfwapj63z0s8a80aj82qkx2ib3vdmcwx-nix-conformance-iets.drv