these 2 derivations will be built:
  /nix/store/r3r8sac1zxy71mjcbv795d6cvw42j5fb-tribuchet-deps-0.1.0.drv
  /nix/store/h40m9r3ihi6hwcg3z0lw1fyfv3zx5r0r-tribuchet-0.1.0.drv