Bruce Momjian <bruce@momjian.us> writes:
> Tom Lane wrote:
>> There was just some discussion about that on postgis-devel. I think the
>> conclusion was that you would have to do the PostGIS update as a
>> separate step. They intend to support both 1.3.x and 1.4.x on current
>> versions of Postgres for some time, so in principle you could do it in
>> either order.
> Oh, yea, you can't go from PostGIS version 1.3 to 1.4 _while_ you do the
> pg_migrator upgrade. It has to be done either before or after
> pg_migrator is run. I wonder how I could prevent someone from trying
> that trick.
You don't need to, because it will fail automatically. They are using
version-numbered .so files, so C-language functions referencing the 1.3
.so will fail to load if only the 1.4 .so is in the new installation.
regards, tom lane