these 4 derivations will be built:
  /nix/store/8498491yh9bv3ip4c2ybzmcg6z9hs4xz-iets-fuzz-diff-0.0.0.drv
  /nix/store/pcsl19jkljxxg792wjvil9zdsj6zdc6n-iets-0.1.0.drv
  /nix/store/24kc0pgl5c7y7ar911dginjdxj3dsndf-iets-conformance-adapter.drv
  /nix/store/xs1zbzd5g0kxrpdgiy7xgx2m8mhmp0jw-nix-conformance-iets.drv