#8095: TypeFamilies painfully slow -------------------------------------+------------------------------------- Reporter: MikeIzbicki | Owner: goldfire Type: bug | Status: new Priority: high | Milestone: Component: Compiler (Type | Version: 7.6.3 checker) | Resolution: | Keywords: TypeFamilies Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: #5321, #11598, | Differential Rev(s): Phab:D3752, #12506, #13386 | Phab:D4766 Wiki Page: | -------------------------------------+------------------------------------- Comment (by danilo2): I'm just writing to tell that me and our team is waiting for this patch as well. We heavily use type families for our extensible records implementation (and other things) and our current build takes over an hour and consumes almost 30Gb of RAM. We have investigated it heavily and we are sure its related exactly to type families resolution. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8095#comment:53 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler