[GHC] #10220: Imports from `.hspp` and `.hscpp` files not loaded in --make mode

[GHC]

#10220: Imports from `.hspp` and `.hscpp` files  not loaded in --make mode
-------------------------------------+-------------------------------------
        Reporter:  thomie            |                   Owner:  thomie
            Type:  bug               |                  Status:  patch
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Driver            |                 Version:  7.8.1
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:  Phab:D778
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Comment (by Thomas Miedema <thomasmiedema@…>):

 In [changeset:"7cec6c7b2973b34c18da1c74c87cead33bb1bfd7/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="7cec6c7b2973b34c18da1c74c87cead33bb1bfd7"
 Change which files --make thinks are 'Haskellish' (#10220)

 `.hspp` and `.hscpp` are haskell files that have already been
 preprocessed.

 Treat `.hspp` and `.hscpp` as Haskellish sources again, as they were
 before
 commit a10e1990. This way, ghc --make will load their imports.

 Make sure that `.cmm` and `.cmmcpp` are still not treated as Haskellish,
 by moving them out of `haskell_src_suffixes` (but still keeping them in
 haskellish_suffixes, though I'm not sure what the purpose of that group
 is).

 Reviewed By: austin

 Differential Revision: https://phabricator.haskell.org/D778
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10220#comment:2>
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