Added a comment: A patch to fix the problem

doc/bugs/Build_error:_Ambiguous_occurrence___96__callCommand__39__/comment_1_3127b3c448888fdf70096f24c7cbfd3c._comment

@@ -0,0 +1,50 @@
+[[!comment format=mdwn
+ username="https://www.google.com/accounts/o8/id?id=AItOawnzFs0ZJvkUvEVI_OAp0aAP1CTOw2UUXl4"
+ nickname="Christian"
+ subject="A patch to fix the problem"
+ date="2014-01-29T17:26:58Z"
+ content="""
+The following patch lets me compile everything, but I am not sure it is right:
+
+[[!format sh \"\"\"
+diff --git a/Command/PreCommit.hs b/Command/PreCommit.hs
+index 6644f6f..f3ad454 100644
+--- a/Command/PreCommit.hs
++++ b/Command/PreCommit.hs
+@@ -7,7 +7,7 @@
+ 
+ module Command.PreCommit where
+ 
+-import Common.Annex
++import Common.Annex hiding (callCommand)
+ import Command
+ import Config
+ import qualified Command.Add
+diff --git a/Command/Sync.hs b/Command/Sync.hs
+index 6ef111b..fde4a9a 100644
+--- a/Command/Sync.hs
++++ b/Command/Sync.hs
+@@ -8,7 +8,7 @@
+ 
+ module Command.Sync where
+ 
+-import Common.Annex
++import Common.Annex hiding (callCommand)
+ import Command
+ import qualified Annex
+ import qualified Annex.Branch
+diff --git a/RunCommand.hs b/RunCommand.hs
+index 937686d..d76b457 100644
+--- a/RunCommand.hs
++++ b/RunCommand.hs
+@@ -9,7 +9,7 @@
+ 
+ module RunCommand where
+ 
+-import Common.Annex
++import Common.Annex hiding (callCommand)
+ import qualified Annex
+ import Types.Command
+ import qualified Annex.Queue
+\"\"\"]]
+"""]]