these 4 derivations will be built:
  /nix/store/gqzhslzazmp0bjvqrjckzc6iwbyr4cb3-iets-fuzz-diff-0.0.0.drv
  /nix/store/r2bxb02kb33ap3zxpqj3fms1v1zvkb20-iets-0.2.0.drv
  /nix/store/hx669kkd01s7allmjk0z2y5qc80sbdrq-iets-conformance-adapter.drv
  /nix/store/cjr5f7z2hlyzypsz4xib81602pzqvsc0-nix-conformance-iets.drv