shared-fields

a tiny library for using shared lens fields.

A simple single-module library for creating lens field typeclasses in a way that allows them to be shared between modules. By default, lens' makeFields creates a new class if it can't find a matching one in scope. This means that if you try to makeFields records in different modules without importing one module into the other, you'll get conflicting class definitions rather than a single lens which functions with both records.