PolyMC Incompatibility

[MCFX2]

I'm trying to run this on a 1.20.4 Fabric server and a semi-vanilla client (using Trinkets+PolyMC).

The resourcepack generated for this clearly loads, because the items appear and have textures/models in my inventory:

But as you can see, the "hat stand" is still just a pig and the hats don't appear on my player at all.

Logs here:
https://pastebin.com/ZBg2yXLb

I just started the server, logged in, gave myself a hat, took the above screenshot, and logged out again. My assumption is I screwed up the installation somehow but the docs are pretty vague.

[fonnymunkey]

PolyMC does not appear to be compatible with many mods (and I wouldn't expect it to, its very ambitious.)
From what I understand, Trinkets Polymer is meant for server-side-only mods to depend on, SimpleHats is designed for Trinkets not Trinkets Polymer, and is certainly not a server-side-only mod, whereas PolyMC attempts to convert mods into server-side-only at runtime.
You likely will want to report this to the PolyMC github, however I doubt there is anything I can do to fix it, SimpleHats just isn't server-side-only.

[MCFX2]

Understood. It's frustratingly close to just working, though. Thanks!