#14191: Implement Semigroup as a superclass of Monoid Proposal (Phase 2) -------------------------------------+------------------------------------- Reporter: hvr | Owner: hvr Type: task | Status: new Priority: normal | Milestone: 8.4.1 Component: libraries/base | Version: 8.2.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #10365 | Differential Rev(s): phab:D3927 Wiki Page: | prime:Libraries/Proposals/SemigroupMonoid| -------------------------------------+------------------------------------- Comment (by RyanGlScott): The SMP is already a rather backwards //in//compatible change as it is (in the sense that many libraries are going to be broken until they catch up and add `Semigroup` instances), so I don't feel too shaken up about changing a `Monoid` constraint to a `Semigroup` one on top of that. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14191#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler