On Mon, Aug 31, 2015 at 07:28:00PM -0400, Andrew Dunstan wrote:
> 
> 
> On 08/31/2015 07:21 PM, David E. Wheeler wrote:
> >On Aug 31, 2015, at 4:20 PM, Bruce Momjian <br...@momjian.us> wrote:
> >
> >>>I think it would help if its noted somewhere in the document as it would 
> >>>have
> >>>helped us save some time understanding why it was failing and why it was
> >>>looking for json_build.
> >>The problem is that this is a rare case where you had an extension that
> >>was later included in Postgres.
> >Maybe not so rare. Thanks to Andrew, we’ve had to do this for both 9.2-9.3 
> >(json_object) and 9.3-9.4 (json_build).
> >
> 
> 
> Yeah, a lot of people don't like to wait for new stuff. :-)

It might make the most sense to mention this method in the release notes
of the extension.  However, I assume they are not using the extension in
the new server so their is no release to look at.

Still, I don't know how many people are doing this, but the right fix is
to get the names of the modules that are superceeded and tell pg_upgrade
to skip them.

-- 
  Bruce Momjian  <br...@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + Everyone has their own god. +


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