As you may have seen, I already added quite some mods to the supported list.
However, if you are a mod author, you might want to add compatibility without having to rely on me updating my mod. Here's how to do it:

STEP 1: Create the config file.
In your mod in the Config folder, create a file named XComSkinSystem.ini.

STEP 2: Create the header.
In XComSkinSystem, the first line should be:

STEP 3: Add your weapon templates.
AssaultRifle_Advent_CV is a skin for AssaultRifle_CV

If you make your mod compatible, drop a comment so I can link to your mod from the description ;)

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Did you know that my mod also features a system to create the templates for you without having to write code, only via configs? Check out the link here[docs.google.com]