Hello,
Attempting to build jhc (the make install), I get:
[ 8 of 166] Compiling Util.ArbitraryInstances ( Util/ArbitraryInstances.hs,
Util/ArbitraryInstances.o )
Util/ArbitraryInstances.hs:7:0:
Duplicate instance declarations:
instance [overlap ok] (Arbitrary a) => Arbitrary (Maybe a)
-- Defined at Util/ArbitraryInstances.hs:7:0
instance (Arbitrary a) => Arbitrary (Maybe a)
-- Defined in Test.QuickCheck
Util/ArbitraryInstances.hs:14:0:
Duplicate instance declarations:
instance [overlap ok] (Arbitrary a, Arbitrary b) =>
Arbitrary (Either a b)
-- Defined at Util/ArbitraryInstances.hs:14:0
instance (Arbitrary a, Arbitrary b) => Arbitrary (Either a b)
-- Defined in Test.QuickCheck
make: *** [jhc] Error 1
tn@linux:~>
This happens on a PPC Mac OS X 10.4. GHC is ghc 6.6 branch from February 21st
2007.
Help to proceed from here would be most appreciated.
Thanks and the best regards
Thorkil
