these 4 derivations will be built:
  /nix/store/0qbw3hxsy7n59p75gv3n350v1bl2n4ya-iets-fuzz-diff-0.0.0.drv
  /nix/store/pn47rn7gh5df59bl4rdzlppc1n2x506k-iets-0.1.0.drv
  /nix/store/b0dxp8dp34l9z4k00aw5pkw1rgh514f4-iets-conformance-adapter.drv
  /nix/store/66y3ps7fmh75jzskwxg3blnwrx4kj34i-nix-conformance-iets.drv