Re: Removing pg_pltemplate and creating "trustable" extensions

I wrote:
> Stephen Frost <sfrost@snowman.net> writes:
>> On Tue, Jan 28, 2020 at 16:17 Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> On the other hand, there's the point that lots of people have probably
>>> given out schema-CREATE privilege to users whom they wouldn't necessarily
>>> wish to trust with INSTALL privilege.  Schema-CREATE is a pretty harmless
>>> privilege, INSTALL much less so.

>> CREATE doesn't just control the ability to create schemas these days- it
>> was extended to cover publications also not that long ago.

> Oh really ... hm, that does make it a much bigger deal than I was
> thinking.  Given that, I don't think there's any huge objection to
> attaching this to CREATE, at least till we get around to a more
> significant redesign.

Here's a v5 that drops the new predefined role and allows
trusted-extension installation when you have CREATE on the current
database.  There's no other changes except a bit of documentation
wordsmithing.

Barring further complaints, I'm going to push this fairly soon.

			regards, tom lane