[GHC] #16183: GHC HEAD regression: -ddump-splices incorrectly parenthesizes HsKindSig applications

[GHC]

#16183: GHC HEAD regression: -ddump-splices incorrectly parenthesizes HsKindSig
applications
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Template Haskell  |              Version:  8.7
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Debugging         |  Unknown/Multiple
  information is incorrect           |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 So are type family equations:

 {{{#!hs
 {-# LANGUAGE TemplateHaskell #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# OPTIONS_GHC -ddump-splices #-}
 module Bug where

 import Data.Kind

 $([d| type family F a where
         F (a :: Type) = Int |])
 }}}
 {{{
 $ ~/Software/ghc4/inplace/bin/ghc-stage2 --interactive Bug.hs
 GHCi, version 8.7.20190114: https://www.haskell.org/ghc/  :? for help
 Loaded GHCi configuration from /home/rgscott/.ghci
 [1 of 1] Compiling Bug              ( Bug.hs, interpreted )
 Bug.hs:(8,3)-(9,30): Splicing declarations
     [d| type family F_a1B4 a_a1B5 where
           F_a1B4 (a_a1B6 :: Type) = Int |]
   ======>
     type family F_a4tB a_a4tC where
       F_a4tB a_a4tD :: Type = Int
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16183#comment:3>
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