[GHC] #10382: Template Haskell (non-quasi) quotes should work with stage 1 compiler

[GHC]

#10382: Template Haskell (non-quasi) quotes should work with stage 1 compiler
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        Reporter:  ezyang            |                   Owner:  ezyang
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Template Haskell  |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:  Phab:D876
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Comment (by Edward Z. Yang <ezyang@…>):

 In [changeset:"28257cae77023f2ccc4cc1c0cd1fbbd329947a00/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="28257cae77023f2ccc4cc1c0cd1fbbd329947a00"
 Support stage 1 Template Haskell (non-quasi) quotes, fixes #10382.

 Summary:
 This commit adds stage 1 support for Template Haskell
 quoting, e.g. [| ... expr ... |], which is useful
 for authors of quasiquoter libraries that do not actually
 need splices.  The TemplateHaskell extension now does not
 unconditionally fail; it only fails if the renamer encounters
 a splice that it can't run.

 In order to make sure the referenced data structures
 are consistent, template-haskell is now a boot library.

 In the following patches, there are:

     - A few extra safety checks which should be enabled
       in stage1
     - Separation of the th/ testsuite into quotes/ which
       can be run on stage1

 Note for reviewer: big diff changes are simply code
 being moved out of an ifdef; there was no other substantive
 change to that code.

 Signed-off-by: Edward Z. Yang <ezyang at cs.stanford.edu>

 Test Plan: validate

 Reviewers: simonpj, austin, goldfire

 Subscribers: bgamari, thomie

 Differential Revision: https://phabricator.haskell.org/D876

 GHC Trac Issues: #10382
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10382#comment:10>
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