#4028: Derived Data instance requires Data instances for unused type parameters
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Reporter: igloo | Owner:
Type: bug | Status: new
Priority: normal | Milestone: Not GHC
Component: Compiler (Type checker) | Version: 6.12.2
Keywords: | Difficulty:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by dreixel):
The output of main above is:
> ('p','p','q')
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4028#comment:6>
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