From: simonpj@microsoft.com <unknown>
Date: Tue, 20 Nov 2007 12:57:32 +0000 (+0000)
Subject: FIX Trac #1825: standalone deriving Typeable
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;ds=sidebyside;h=f22f248b88346df835b25f03f8d3372c7bb87950;hp=f22f248b88346df835b25f03f8d3372c7bb87950;p=ghc-hetmet.git

FIX Trac #1825: standalone deriving Typeable

Standalone deriving of typeable now requires you to say
	instance Typeable1 Maybe
which is exactly the shape of instance decl that is generated
by a 'deriving( Typeable )' clause on the data type decl.

This is a bit horrid, but it's the only consistent way, at least
for now.  If you say something else, the error messages are helpful.

MERGE to 6.8 branch
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