these 4 derivations will be built:
  /nix/store/idwjkx2n8xv5zlsv9xz1hcxwxn4x8sjz-iets-0.1.0.drv
  /nix/store/w5rd8dgpyaig0zxxajdyiz83a5fx0fzi-iets-fuzz-diff-0.0.0.drv
  /nix/store/rli2f24008y0xdyyx41iwbs53nbljqmb-iets-conformance-adapter.drv
  /nix/store/dhyaadmg6v4qhavr83vh63zxdf0izcba-nix-conformance-iets.drv