these 4 derivations will be built:
  /nix/store/h8d6mg8lwl7bw28yzq24l2g46lnca8s9-iets-0.1.0.drv
  /nix/store/l5n9lx08cm60m7jkjbfa0dl3wxhcqj1k-iets-fuzz-diff-0.0.0.drv
  /nix/store/nnljc383rca8hdb8ddfd4klynf5czvav-iets-conformance-adapter.drv
  /nix/store/cpsmn3hj01gr4zkscr5zkpwdlnvgrqci-nix-conformance-iets.drv