Re: [GHC] #8865: Cannot derive well-kinded instance of form ‘Category

GHC ghc-devs at haskell.org
Mon Mar 10 08:34:06 UTC 2014


#8865: Cannot derive well-kinded instance of form ‘Category
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        Reporter:  adinapoli                  |            Owner:
            Type:  bug                        |           Status:  new
        Priority:  normal                     |        Milestone:  7.8.1
       Component:  Compiler                   |          Version:
      Resolution:                             |  7.8.1-rc2
Operating System:  MacOS X                    |         Keywords:
 Type of failure:  GHC rejects valid program  |     Architecture:  x86_64
       Test Case:                             |  (amd64)
        Blocking:                             |       Difficulty:  Unknown
                                              |       Blocked By:
                                              |  Related Tickets:
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Comment (by simonpj):

 I'd like to reproduce this, but need definition for `StaticArrowT`,
 `KnownArgs` etc.  Can you add those definitions to the module, and give
 the complete source code for a module that shows the problem?

 Ideally, not depending on other libraries.

 Thanks

 Simon

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8865#comment:1>
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