[GHC] #10668: Missing brackets in import hint with TypeOperators

22 Jul 2015


      #10668: Missing brackets in import hint with TypeOperators
-------------------------------------+-------------------------------------
              Reporter:  bjmprice    |             Owner:
                  Type:  bug         |            Status:  new
              Priority:  normal      |         Milestone:
             Component:  Compiler    |           Version:  7.10.1
              Keywords:              |  Operating System:  Unknown/Multiple
          Architecture:              |   Type of failure:  Incorrect
  Unknown/Multiple                   |  warning at compile-time
             Test Case:              |        Blocked By:
              Blocking:              |   Related Tickets:
Differential Revisions:              |
-------------------------------------+-------------------------------------
 {{{#!hs
 import Data.Type.Equality(Refl)
 }}}
 errors with
 {{{
 error:
     In module ‘Data.Type.Equality’:
       ‘Refl’ is a data constructor of ‘:~:’
     To import it use
       ‘import’ Data.Type.Equality( :~:( Refl ) )
     or
       ‘import’ Data.Type.Equality( :~:(..) )
 }}}
 But the code there does not parse, one needs
 {{{#!hs
 import Data.Type.Equality((:~:)(Refl))
 }}}
 instead (note the extra brackets!).

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10668
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