these 4 derivations will be built:
  /nix/store/32jlpf97a11bizbqqbyjak49cr1fccq8-iets-0.2.0.drv
  /nix/store/j2a83g72m066vrf0x3df90yzd3b9v7m0-iets-fuzz-diff-0.0.0.drv
  /nix/store/caf0hi4936rhsfb6h298d8z2gx2aqlf3-iets-conformance-adapter.drv
  /nix/store/72pn7lbf5ikkhvcpzz9dm15hdz072chm-nix-conformance-iets.drv