[GHC] #14709: Extend the plugin mechanism to access program representation

[GHC]

#14709: Extend the plugin mechanism to access program representation
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        Reporter:  lazac             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  GHC API           |              Version:  8.2.2
      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:                    |  https://phabricator.haskell.org/D4342
  https://ghc.haskell.org/trac/ghc/wiki/ExtendedPluginsProposal|
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Comment (by bgamari):

 First: thanks, lazac, for the patch. GHC's plugin framework has long been
 waiting for someone to flesh it out and this patch looks like a great step
 in that direction. However, GHC's plugin interfaces are part of the
 compiler's public interface and as such will be supported for the
 foreseeable future. Consequently, we want to be careful that we don't end
 up introducing an interface that we will later come to regret.

 I discussed your patch with the Simons this morning and there was a
 general consensus that the proposal and the Haskell tooling community
 (some of whom have yet to comment here) would both benefit immensely from
 having the design in written form as a [[https://github.com/ghc-proposals
 /ghc-proposals|formal proposal]]. This would allow us to collect enough
 use-cases to better evaluate your proposed interfaces. I would be happy to
 lend a hand in developing, proof-reading, or otherwise facilitating this
 proposal if you like to help.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14709#comment:12>
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