Re: make -C src/test/isolation failure in index-killtuples due to btree_gist

On Mon, Aug 18, 2025 at 11:38:02AM -0400, Tom Lane wrote:
> Andres Freund <andres@anarazel.de> writes:
>> No, it makes absolutely no sense to test e.g. hash killtuples support in
>> btree_gist.
> 
> I think the complaint is that nothing has been done to ensure that
> these modules have been installed.  You created a new dependency that
> developers have to work around, rather than teaching the build system
> to handle it.  As a comparison point, all of the tests in
> src/test/recovery, src/test/authentication, etc take care to install
> required modules when you say "make check" in those directories.
> You broke that for src/test/isolation, and you should fix it.
> It shouldn't be much harder than setting EXTRA_INSTALL in the
> Makefile case; I dunno about meson.

All these test suites can rely on EXTRA_INSTALL because they rely on
the check/installcheck rules from Makefile.global, where checkprep is
pulled in.  src/test/isolation defines its own check rules, so we
would need a trick similar to what was done before b1720fe63f34.
--
Michael