these 2 derivations will be built:
  /nix/store/n13b6phqba7r69ivf1zjsiwfwbakkl5z-extest-1.0.3-unstable-2026-05-25-vendor.drv
  /nix/store/2jhdp7zlww3yxccfzzpbd0q375b4i5p5-extest-1.0.3-unstable-2026-05-25.drv