[GHC] #8387: View patterns + pattern bindings: finnicky about scoping

[GHC]

#8387: View patterns + pattern bindings: finnicky about scoping
----------------------------------------------+----------------------------
        Reporter:  tinctorius                 |            Owner:
            Type:  bug                        |           Status:  new
        Priority:  normal                     |        Milestone:
       Component:  Compiler                   |          Version:  7.6.3
      Resolution:                             |         Keywords:
Operating System:  Unknown/Multiple           |     Architecture:
 Type of failure:  GHC rejects valid program  |  Unknown/Multiple
       Test Case:                             |       Difficulty:  Unknown
        Blocking:                             |       Blocked By:
                                              |  Related Tickets:
----------------------------------------------+----------------------------

Comment (by simonpj):

 I remember this as being very fiddly, so I opted for a simple solution.
 It's hard to motivate fancy footwork in the compiler without having some
 pretty compelling use-cases that motivate it.

 If you (and preferably a bunch of others) have really run up against this
 restriction in a big way, please do describe the situation, and why the
 workarounds are unsatisfactory.

 Simon

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8387#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler