[GHC] #11832: Allow reify to yield types in the current declaration group

[GHC]

#11832: Allow reify to yield types in the current declaration group
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           Reporter:                 |             Owner:
  facundo.dominguez                  |
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  7.10.3
           Keywords:  template-      |  Operating System:  Unknown/Multiple
  haskell reify                      |
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
                                     |  TemplateHaskell/Reify
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 Here is the motivation TemplateHaskell/Reify.

 It would be useful to have a way to obtain types of identifiers in the
 current declaration group in splices. However, {{{reify}}} is defined to
 provide information about identifiers in previous declaration groups only.

 It would be fine to allow {{{reify}}} to work in a scheme combined with
 {{{addModFinalizer}}} or similar so it is executed when the types are
 known.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11832>
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