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I'm looking for early feedback on gitlab.com/chiroptical/... #haskell. The basic idea is to describe building blocks (bricks) which define inputs, outputs, dependencies, and their capabilities. Put those bricks together to form "layouts".

The capabilities are registered with the bricks separately and so you could write to a database, an IORef, or a JSON file. You don't lock yourself into any of these choices.

If you are familiar with Graphula, this is conceptually very similar. It just decouple you from Persistent and Arbitrary. In fact, you can basically write Graphula using wall (see wall-graphula/ in the repository).