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  • Glasgow Haskell CompilerGlasgow Haskell Compiler
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  • #8534
Closed
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Issue created Nov 15, 2013 by Krzysztof Gogolewski@monoidalDeveloper

DeriveFunctor and PolyKinds

A tiny infelicity:

{-# LANGUAGE DeriveFunctor #-}
data A a = A deriving Functor

works only if PolyKinds is disabled, otherwise it reports that A has kind k -> * instead of expected * -> *. On the other hand, standalone deriving works fine.

Trac metadata
Trac field Value
Version 7.6.3
Type Bug
TypeOfFailure OtherFailure
Priority low
Resolution Unresolved
Component Compiler (Type checker)
Test case
Differential revisions
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