these 4 derivations will be built:
  /nix/store/ai9zsb6zrh07qy1jqs47p9gz2d6n8cgq-iets-0.2.0.drv
  /nix/store/ni8ls6ngcflx4bix3amllyk3afppql3f-iets-fuzz-diff-0.0.0.drv
  /nix/store/19vdif2rp5xm1n2j73z5jq0ahkf0pya0-iets-conformance-adapter.drv
  /nix/store/6ff4rf02vbdw38smbfdb5qw37a4b0wvk-nix-conformance-iets.drv