[PATCH consfigurator v3] Add some properties to install and configure Postgresql

[David Bremner]

Sean Whitton <spwhitton at spwhitton.name> writes:

>
> I'm sorry I didn't think of this earlier, but it now occurs to me that
> all of these properties will report that a change was made every time
> they are applied.  Can you think of some way to have them return
> :NO-CHANGE when the sql does nothing?  Perhaps %RUN-SQL takes a string
> to look for in the output.

The current SQL does not produce a uniform indication of whether a
change was made in the psql output. It should be possible to add check
forms for most (all?) of the defproplists in this package, would that
help? I imagine it won't really be any faster but maybe the semantics
are more helpful with respect to changes being detected.