With the implementation of TConstruct support in CompatSkills 1.5.0. You now have the ability to lock: - Modifier Addition

For specific Tinker Construct's Modifiers.

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// Blank Example:
mods.compatskills.ModifierLock.addModifierLock(String identifier, String... requirements);

// Example:
mods.compatskills.ModifierLock.addModifierLock("harvestwidth", "reskillable:mining|5", "reskillable:magic|7");