these 4 derivations will be built:
  /nix/store/bfln2y5p1n9ybcdy6p5vm15phndxb08c-iets-0.1.0.drv
  /nix/store/qd9zmzjvm2j8qj4lxwyz8lfgzz6wk53y-iets-fuzz-diff-0.0.0.drv
  /nix/store/wpc6fgvwxgn71jibyqcnpmkac17blrci-iets-conformance-adapter.drv
  /nix/store/1hvbs5bqxfaynbp437pvg7r3pqmppjgv-nix-conformance-iets.drv