these 2 derivations will be built:
  /nix/store/bz4rm0wwr8yalrrixdz30y2ix3xvi5cw-iets-conformance-adapter.drv
  /nix/store/m8han9s4iqrkvw4bgxlnrn3qi5nj32i0-nix-conformance-iets.drv