these 4 derivations will be built:
  /nix/store/2cljk90sa8yyb8vzqw6vbprr1kxmag5l-iets-fuzz-diff-0.0.0.drv
  /nix/store/mjp2kzyp2hzx7ralvhl9a924mhxzcc59-iets-0.2.0.drv
  /nix/store/9x77a1cjxdy920rppjnkfyjrrbv7935q-iets-conformance-adapter.drv
  /nix/store/w38m706y7np8hvpq4idqri735mr5dr4l-nix-conformance-iets.drv