these 2 derivations will be built:
  /nix/store/pynakqbpr7af4n5b9l4nk4b138iwjpq4-toon-format-0.5.0-vendor.drv
  /nix/store/r2bc1n4qw4ac4fzsj0f9r1by8vll5z26-toon-format-0.5.0.drv