these 4 derivations will be built:
  /nix/store/6az1vx9lg56a7r0jj8md01z5azj8dn88-iets-fuzz-diff-0.0.0.drv
  /nix/store/jwdb4ycc8ql4z6cidaswj0flapa6v02v-iets-0.2.0.drv
  /nix/store/h5zb1gl5jq4692ln4gdvwn0kxfrfifgr-iets-conformance-adapter.drv
  /nix/store/ihqpbzhmpvzmay2p20jxbl8y5y281jhb-nix-conformance-iets.drv