[GHC] #13054: Generating unique names with template haskell

GHC ghc-devs at haskell.org
Wed Jul 26 11:47:59 UTC 2017


#13054: Generating unique names with template haskell
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        Reporter:  tim-m89           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Template Haskell  |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 I'm not convinced yet.  Expanding the API for TH is ok, but it complicates
 the user model.

 Let's see.  This conversation concerns top-level declarations.  I can see
 two use-cases

 * Functions or data types that are used locally (in some other function or
 data type), but not really exported.

 * Functions or data types that are exported.

 For the former, it's in implementation shortcoming that `newName` does not
 work (e.g. comment:2).  For the latter, for it to be useful importing
 module needs to know the name, so exporting (say) `makeFun_4j121c4` and
 `makeFun_4j12137` is not helpful.

 So maybe the latter is a non-use-case.

 If it's just the former I think we should be able to make it "just work".

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13054#comment:5>
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