[project @ 1997-09-03 23:34:59 by sof]

new deriving test cases

ghc/tests/deriving/should_compile/drv008.hs

+--!!! deriving Ix on d. type with nullary constructors
+module ShouldSucceed where
+
+data AD = A | B | C | D deriving (Show, Ord, Eq, Ix)
+

ghc/tests/deriving/should_compile/drv009.hs

+--!!! deriving Ix on d. type with one constructor
+module ShouldSucceed where
+
+data Pair a b = Pair a b deriving (Show, Ord, Eq, Ix)

ghc/tests/deriving/should_compile/drv010.hs

+--!!! deriving Enum on d. type with nullary constructors
+module ShouldSucceed where
+
+data AD = A | B | C | D deriving (Enum)