these 2 derivations will be built:
  /nix/store/v8b55y0gk3i1s2nw5c4jnkp0z47bqpk8-generate-dependency-diagram.drv
  /nix/store/0y0r0gmlvsh3ii3hxcn7l03gjwy0zk2f-check-dependency-diagram.drv