Added a comment

doc/bugs/tests_failed_to_build_-_after_an_update_of_haskell_platform/comment_2_6fdc5f8b07908c6eda8a97690408f44e._comment

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+[[!comment format=mdwn
+ username="https://www.google.com/accounts/o8/id?id=AItOawkSq2FDpK2n66QRUxtqqdbyDuwgbQmUWus"
+ nickname="Jimmy"
+ subject="comment 2"
+ date="2012-12-11T08:29:07Z"
+ content="""
+yea its a problem with testpack rather than git-annex's test suite,
+
+<pre>
+[jtang@laplace git-annex (master)]$ cabal install testpack
+Resolving dependencies...
+Configuring testpack-2.1.2...
+Building testpack-2.1.2...
+Preprocessing library testpack-2.1.2...
+[1 of 3] Compiling Test.QuickCheck.Instances ( src/Test/QuickCheck/Instances.hs, dist/build/Test/QuickCheck/Instances.o )
+[2 of 3] Compiling Test.QuickCheck.Tools ( src/Test/QuickCheck/Tools.hs, dist/build/Test/QuickCheck/Tools.o )
+
+src/Test/QuickCheck/Tools.hs:33:9:
+    Warning: Fields of `MkResult' not initialised: abort
+    In the expression:
+      MkResult
+        {ok = Just (expected == actual), expect = True,
+         interrupted = False,
+         reason = \"Result: expected \"
+                  ++ show expected ++ \", got \" ++ show actual,
+         stamp = [], callbacks = []}
+    In an equation for `@=?':
+        expected @=? actual
+          = MkResult
+              {ok = Just (expected == actual), expect = True,
+               interrupted = False,
+               reason = \"Result: expected \"
+                        ++ show expected ++ \", got \" ++ show actual,
+               stamp = [], callbacks = []}
+[3 of 3] Compiling Test.HUnit.Tools ( src/Test/HUnit/Tools.hs, dist/build/Test/HUnit/Tools.o )
+
+src/Test/HUnit/Tools.hs:131:57:
+    `maxDiscard' is not a (visible) constructor field name
+
+src/Test/HUnit/Tools.hs:177:40: Not in scope: `maxDiscard'
+cabal: Error: some packages failed to install:
+testpack-2.1.2 failed during the building phase. The exception was:
+ExitFailure 1
+</pre>
+"""]]