If there's a better list than this, please let me know, but I figured hackers is appropriate since the extension building infrastructure is documented in core.
While working on an in-house extension I realized that while PGXS provides the standard regression test infrastructure, I'm not aware of an automatic or standard way to test all upgrade paths provided by the extension. Is there something I'm missing? Or an approach people like (I suppose the simplest way would be "manually" executing the upgrade files in a regress test, but that seems tedious). Thanks, James