[GHC] #9018: GHC suppresses too much kind information

GHC ghc-devs at haskell.org
Mon Apr 21 11:18:05 UTC 2014


#9018: GHC suppresses too much kind information
-------------------------------------+------------------------------------
        Reporter:  simonpj           |            Owner:
            Type:  feature request   |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by goldfire):

 +1 from me.

 I lived without a .ghci file until I experienced pain from this particular
 issue. Now, I have

 {{{
 :seti -XPolyKinds
 :set -fprint-explicit-foralls
 :set -fprint-explicit-kinds
 }}}

 among other options.

 Perhaps it might also be nice to inform the user to use `-fprint-explicit-
 kinds` in an error message if some heuristics (don't know what, at the
 moment) indicate that it might be helpful. I feel like I've answered
 several invalid bug reports because of quite legitimately confusing error
 messages.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9018#comment:1>
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