Somebody claiming to be Christopher Vollick wrote:
On Fri, Feb 08, 2013 at 01:20:53PM +0100, Gabor Greif wrote:libraries/base/Foreign/C/Types.hs:162:72: No instance for (Fractional Int32) arising from the 'deriving' clause of a data type declaration Possible fix: use a standalone 'deriving instance' declaration, so you can specify the instance context yourself When deriving the instance for (Fractional CFloat)Has anybody seen this with HEAD?
This may be a side effect of the fix for <http://hackage.haskell.org/trac/ghc/ticket/7569>
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