Jonathan Hayward <jonathan(dot)hayward(at)pobox(dot)com> writes:
> I have been experiencing spooky behavior with Postgres after using the Mac
> installer for Postgres. There seems to be an existing half-baked Postgres
> installation that was already there and remains there after I deleted the
> Mac GUI installer version from /Applications and /Library.
That's probably the client-side-only support that Apple installs by
default --- /usr/bin/psql, at least, is Apple's. I'm not sure what
might break if you remove that.
regards, tom lane