#7080: Make RULES and SPECIALISE more consistent ---------------------------------+------------------------------------------ Reporter: simonpj | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: Compiler | Version: 7.4.2 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by akio): * cc: tkn.akio@… (added) Comment: I experienced a situation where I wanted to write rules like this. I think it would be very useful if the rule was accepted, and worked by finding whatever (Monoid w) dictionary that is in scope. But perhaps I am asking too much of the simplifier? -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7080#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler