Paul Guo created HAWQ-672:
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             Summary: Add python module pygresql back into hawq workspace
                 Key: HAWQ-672
                 URL: https://issues.apache.org/jira/browse/HAWQ-672
             Project: Apache HAWQ
          Issue Type: Bug
            Reporter: Paul Guo
            Assignee: Lei Chang


HAWQ-271 (Remove external python modules) removed a lot of external python 
modules besides pygresql. Now to install pygresql, we have to hack a bit as  
https://cwiki.apache.org/confluence/display/HAWQ/Build+and+Install said, i.e. 
install postgresql package at first and then remove it after installing 
pygresql, else pip will report error like "pg_config: command not found". Since 
installing postgresql is a bit painful and the workaround seems to be ugly, we 
could revert the code change for pygresql for HAWQ-271. That is to say, users 
do not need to install pygresql themselves. Note that we did some hack to 
upstream pygresql.



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