these 2 derivations will be built:
  /nix/store/6bwizi4n4savlnrpj3xf8w5bfbjwma2v-iets-fuzz-diff-0.0.0.drv
  /nix/store/26y936764038xszf529n1bv6v3mpq3pm-iets-fuzz-wire-check.drv