these 4 derivations will be built:
  /nix/store/5ggq8hr0ijkj39338j4157bshd44czhs-iets-fuzz-diff-0.0.0.drv
  /nix/store/vd6v2b11r3ix6x6vlhrgksk5gpd9y3gj-iets-0.1.0.drv
  /nix/store/hh4qad7p6sjbl745rbplvbx4qyks1wbr-iets-conformance-adapter.drv
  /nix/store/wn8rk7irkjrb4lw9sbagrgv4x6v73wd1-nix-conformance-iets.drv