
Mixin Args
This straightforward modification serves a single, specific function—it adds a custom package for the Mixin library that's essential for properly generating synthetic Args-classes.
The issue arises due to Java's Module System (JPMS) requirements, which mandate declaring all packages in advance before attempting to load classes from them.
Technically, Mixin itself could resolve this limitation on its end by creating a small jar file with the necessary packages already included in the game layer—much like this mod does.
Therefore, Mixin Args proves especially valuable for older versions of Mixin and Forge that don't yet have this fix implemented.