these 4 derivations will be built:
  /nix/store/hx22na60l9iyf3rnqjq80kgi57pnni3n-iets-0.1.0.drv
  /nix/store/m9kzbrya73n43xvizp5jxw4c48pja61a-iets-fuzz-diff-0.0.0.drv
  /nix/store/d1j7y52b4b6faaf9vwz5zp84cnwk6bkf-iets-conformance-adapter.drv
  /nix/store/18iah2ijm1d0qy2yn1m1x8lsgzdi04ly-nix-conformance-iets.drv