Changelog of @hackage/ghc-tcplugin-api 0.6.0.0

Version 0.6.0.0 (2021-12-13)

  • Add support for GHC 8.8.

  • Re-export evDataConApp, which is useful for constructing typeclass dictionaries.

Version 0.5.1.0 (2021-08-31)

  • Fix a bug in the type-family rewriting compatibility layer (GHC 8.10, 9.0, 9.2) by correctly downgrading the coercion used to cast the evidence, when necessary.

Version 0.5.0.0 (2021-08-30)

  • Re-export some additional types and functions that are useful for inspecting and constructing evidence terms, such as mkTyVar, newName, mkLocalId, lookupEvBind...

Version 0.4.1.0 (2021-08-24)

  • Re-export a few GHC modules, such as GHC.Core.Make and GHC.Plugins. These re-exports might be changed to be more selective in the future to aid cross-version compatibility.

Version 0.4.0.0 (2021-08-24)

  • Adapt to GHC 9.4 changes in the TcPluginSolveResult datatype: are now able to solve and emit constraints even when reporting a contradiction. This can help with error messages. Unfortunately these extra constraints will be dropped in versions of GHC prior to 9.4.

  • Add a utility module for name resolution using constrained traversals.

  • Add compatibility for GHC 8.10.

Version 0.3.1.0 (2021-08-09)

Ensure that the coercions stored in Reductions are always oriented left-to-right, by making the internal rewriting compatibility layer also use left-to-right coercions.

Version 0.3.0.0 (2021-08-04)

Account for changes in rewriting in GHC 9.4:

  • rewriter plugins can no longer emit new Wanted constraints if they don't rewrite the type family application;
  • coercions in the rewriter are now oriented left-to-right, requiring mkTyFamAppReduction to be adapted.

Version 0.2.0.0 (2021-07-22)

Initial release on Hackage.