[GHC] #13008: Cleanup backwards compatibility ifdefs due to stage1 external interpreter work

[GHC]

#13008: Cleanup backwards compatibility ifdefs due to stage1 external interpreter
work
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        Reporter:  shlevy            |                Owner:
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.1
      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 Tamar Christina <tamar@…>):

 In [changeset:"27f79255634d9789f367273504545c1ebfad90a0/ghc"
 27f79255/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="27f79255634d9789f367273504545c1ebfad90a0"
 Allow use of the external interpreter in stage1.

 Summary:
 Now that we have -fexternal-interpreter, we can lose most of the GHCI
 ifdefs.

 This was originally added in https://phabricator.haskell.org/D2826
 but that led to a compatibility issue with ghc 7.10.x on Windows.
 That's fixed here and the revert reverted.

 Reviewers: goldfire, hvr, austin, bgamari, Phyx

 Reviewed By: Phyx

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2884

 GHC Trac Issues: #13008
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13008#comment:1>
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