these 4 derivations will be built:
  /nix/store/a7f71wlxmljs3dqh4nfnbv08vr1dc0vx-iets-0.2.0.drv
  /nix/store/l06cc6aydfml8lnkmlj9w3b2vz0ji6h0-iets-fuzz-diff-0.0.0.drv
  /nix/store/k3w91s6dmjz27k9f4vm5rd4digm8l1nb-iets-conformance-adapter.drv
  /nix/store/larva14b356j1gdz00j0b86nd9r022zz-nix-conformance-iets.drv