A quasiquoter for better instance deriving and default methods.
A template haskell utility inspired by the Intrinsic Superclasses Proposal, which allows defining all superclass methods at the "root" subclass of the heirarchy in one declaration, rather than an instance declaration per class. Also permits defining superclass method defaults with the subclass for greater flexibility than the DefaultSignatures extension
intrinsic-superclasses
A template haskell implementation of the Intrinsic Superclasses Proposal, which allows defining all typeclass methods at the "root" of the class heirarchy, rather than an instance declaration per class.
There are currently a number of limitations compared with the full language proposal (see: issues).
Functionality is added as-needed so drop an issue (and/or a pull request, if you're feeling ambitious 😉) if you have a use-case that isn't covered now.