[GHC] #8095: TypeFamilies painfully slow

[GHC]

#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