Any ideas on why ext-ds stub might not be loaded?

[rzvc]

Psalm is complaining about Ds\Set having too many template arguments (one), which leads me to believe ext-ds stub is not loaded.

Any ideas on what could cause this?

[AndrolGenhald]

If you're using Psalm 5 then you need to require "ext-ds" in composer.json or add it with the <enableExtensions> config. I've been wanting to finish up some of the extension changes I had planned and better document it, but time has been hard to find lately.

[rzvc]

Thanks!