This page exists to track proposals that the Core Libraries Committee is actively working on.

Active Proposals

• Libraries/Proposals/SemigroupMonoid
• Libraries/Proposals/MonadFail
• Libraries/Proposals/ExpandFloating has been accepted through Phase 1.

Roadmap for GHC's base library

This page aims to provide a concise summarized view of major planned changes for upcoming GHC releases related to the base library (including related GHC facilities such warnings).

GHC 8.0 (base-4.9)

• Add Data.Semigroup and Data.List.NonEmpty modules

  ( ghc:#10365, i.e. Phase1 of Proposals/SemigroupMonoid)

• Add -Wcompat warnings about missing Semigroup instances.

• Add Control.Monad.Fail and a MonadFail language pragma. (Phase 1 of Proposals/MonadFail)

• Add -Wcompat warnings about missing MonadFail instances.

• Add expm1, log1p, log1pexp, log1mexp to Floating (with defaults) (Phase 1 of Proposals/ExpandFloating)

GHC 8.2

• Nothing planned.

GHC 8.4

• Turn the Semigroup and MonadFail warnings into warnings that are on by default.
• Warn about the pending removal of the default definitions for log1p, etc. (tentative)

GHC 8.6

• Turn on MonadFail by default.
• Move Semigroup into Prelude.
• Remove the default definitions of log1p, etc. (tentative)

GHC 8.8

• Nothing planned.