these 4 derivations will be built:
  /nix/store/1lq96f3l9msnm3db2rfij5fywirc0fpb-iets-0.1.0.drv
  /nix/store/hjnibp5vnawyvkdjzbwglqlaz919n3bk-iets-fuzz-diff-0.0.0.drv
  /nix/store/sb0j148yyilarkral86bk87a46xfys01-iets-conformance-adapter.drv
  /nix/store/0h5fvfxikqsm2q5ygim8nam9sjsigflq-nix-conformance-iets.drv