these 4 derivations will be built:
  /nix/store/3vb8fi2iambaz032qrqpdnc4c145ybv7-iets-0.1.0.drv
  /nix/store/wa9kcfm6bkdbikimydnm0s7w53d49bli-iets-fuzz-diff-0.0.0.drv
  /nix/store/56rdxbjpmifr57l3a3ar76yprr9lsw83-iets-conformance-adapter.drv
  /nix/store/sl67fqg9n77jpnflcnkv7af3xihq3p1d-nix-conformance-iets.drv