generic-lens-core

Generically derive traversals, lenses and prisms.

This library uses GHC.Generics to derive efficient optics (traversals, lenses and prisms) for algebraic data types in a type-directed way, with a focus on good type inference and error messages when possible. This package is the shared internal logic of the @<https://hackage.haskell.org/package/generic-lens generic-lens>@ and @<https://hackage.haskell.org/package/generic-optics generic-optics>@ libraries.