these 4 derivations will be built:
  /nix/store/mznbwjym4sqvqnm678l750pzc31aqwz7-iets-fuzz-diff-0.0.0.drv
  /nix/store/pib621y3wrlcvpc8klc63sdkyfndyayz-iets-0.1.0.drv
  /nix/store/ahkbazdwjfq7bmbx9i0mdvpylq996i00-iets-conformance-adapter.drv
  /nix/store/0viy8mkc72fhx590fxx393i8nb5sxljw-nix-conformance-iets.drv