#6015: "No instance" when using PolyKinds/DataKinds/FunDeps/Undecidable
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Reporter: atnnn | Owner:
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.4.1
Resolution: | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: GHC rejects valid program | Difficulty: Unknown
Testcase: polykinds/T6015 | Blockedby:
Blocking: | Related:
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Comment(by simonpj):
Whoa! atnnn, you are '''right''' on the ball. I'd found this exact same
problem when looking at #6068, but it's a subtle one. So hats off you to
you for finding the exact spot where the bug is. (Took me a little
while.)
Feel free to keep debugging type inference! You clearly know what you are
doing. I wonder who you really are?
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6015#comment:8>
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