> Also it seems like you should be able to create a meta package called 
> "postgis" that installs all the extensions or allow the user to install 
> individual extensions via postgis-<name>. 
> I think the extension mechanism is still fairly new so maybe raising some of 
> the issues with postgresql will help in the longer term.

> Well you sorta can in PostgreSQL 9.6, you can create a skeleton postgis-mega 
> extension that does nothing but says it requires postgis, postgis_topology, 
> postgis_whatever

> And then install with 

> CREATE EXTENSION postgis-mega CASCADE;

> And all dependencies would be installed.  


> However you'd still need to keep the versions in synch when you upgrade since 
> the extension system doesn't currently 
> have a way to specify which minimum version is required of an extension or 
> alternative extensions.  That's something that has been discussed on postgres 
> list in past.

I should double-check 9.6, they might have a companion

ALTER EXTENSION postgis-mega UPDATE CASCADE;

That would bring all dependent extensions up to the latest version. In which 
case yes you can also update them together.

Thanks,
Regina





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