Label the Trinkets Compat Layer for Accessories as compatible with neoforge because it is compatible with Sinytra Connector. Both CurseForge and Modrinth don't notify you when a mod that uses a different modloader than your modpack gets updated and then we have to manually install it and check on it. So just label all the versions as compatible with neoforge

I am not sure if this is practical. If you label this as compatible with NeoForge you now have to

• declare Sinytra as a dependency, which is just wrong.
• declare Sinytra as an optional dependency, which won't be obvious to users that it is required within the context of NeoForge
• or don't declare it at all.

All of these just cause confusion, and will lead to a ton of complaints and new issues on why the mod doesn't work.

And yes, until now I don't believe I have seen any launcher or tool handle mod updates in a mixed loader-pack gracefully (like CurseForge, Modrinth Launcher, Prism, and packwiz). In general this is an annoying problem to solve. Without launcher support for Sinytra, having mixed mods will lead to bad compromises and manual work for modpacks overall

Not really a planned concept but with recent version of compat layer for 1.21.1, native support for trinkets exists for both fabric or neo with connector: https://modrinth.com/mod/accessories-compat-layer