[GHC] #15758: hsc2hs broken due to incorrect argument passing to the hsc2hs executable

[GHC]

#15758: hsc2hs broken due to incorrect argument passing to the hsc2hs executable
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        Reporter:  osa1              |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:
      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 ckoparkar):

 I forgot to mention the Cabal bits in comment:3. In Cabal, the decision of
 whether or not to use response files for invoking {{{hsc2hs}}} is made
 based only on the version of {{{hsc2hs}}}.

 {{{#!haskell
 if hsc2hs_version >= 0.68.4
 then use response files
 else regular command-line arguments
 }}}

 But we can have a {{{hsc2hs-0.68.4}}} that is compiled with GHC < 8.6,
 which won't support response file arguments. I think this is what's
 happening in the {{{regex-posix}}} example that osa1 posted.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15758#comment:4>
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