
As you can see, in stable 0.9, you at least get an indication that you can build the object in question. In the latest build, I can tell it autodetects it and then appears, but there’s no way to tell what you need to build this before you actually build it. I thought this was a bug and not an intentional feature, hiding buildable objects from the player till you arbitrarily have the materials and are in the right situation to craft it.