these 4 derivations will be built:
  /nix/store/hdxjaq9qx0684z7yax7ppmicfxhq04vq-iets-fuzz-diff-0.0.0.drv
  /nix/store/mg41431k4zx3rnjzp9d8x745lbik582m-iets-0.2.0.drv
  /nix/store/dh8l78y5ymfiq1bnk9fxpq1d7yb71ypi-iets-conformance-adapter.drv
  /nix/store/kcfra8yvchikps63x0wfsfhn8zh567zj-nix-conformance-iets.drv