[GHC] #15384: Every implication should bump the TcLevel exactly once

[GHC]

#15384: Every implication should bump the TcLevel exactly once
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        Reporter:  goldfire          |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.5
      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 Tritlo):

 I've fixed the ones that were due to the hole fits setting the `TcLevel`
 incorrectly, and submitted a patch to Phabricator
 (https://phabricator.haskell.org/D4994). However, `T10384`, `T14040a` and
 `TcStaticPointersFail02` still fail, and are unrelated to typed-holes.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15384#comment:6>
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