these 4 derivations will be built:
  /nix/store/hfhnx534s44yshg7sifmgbx31b1ljw39-iets-0.2.0.drv
  /nix/store/qg5m5k84z1j3qsbir04yr0ci94lzlg09-iets-fuzz-diff-0.0.0.drv
  /nix/store/vhb12cdfx6nny2r08whdpgdc9gshxan6-iets-conformance-adapter.drv
  /nix/store/5hwfnxi2zj8jj3v7dc2d3dwy607xd8px-nix-conformance-iets.drv