MixinBooter

Mod

by CleanroomMC

The Mixin Library for 1.8 - 1.12.2.

Type

Mod

CurseForge Downloads

12,258,045

CurseForge ID

419286

Last Updated

Sep 10, 2026

Description

MixinBooter

Allows any mixins that work on mods to work effortlessly on 1.8 - 1.12.2

Current Mixin Version: UniMix 0.15.3 forked by CleanroomMC, derived from 0.8.7 branch by LegacyModdingMC
Current MixinExtra Version: 0.5.0

For Developers:

Add CleanroomMC's repository and depend on MixinBooter's maven entry:

repositories { maven { url 'https://maven.cleanroommc.com' } } dependencies { // Common: annotationProcessor 'org.ow2.asm:asm-debug-all:5.2' annotationProcessor 'com.google.guava:guava:32.1.2-jre' annotationProcessor 'com.google.code.gson:gson:2.8.9' // ForgeGradle: implementation ('zone.rong:mixinbooter:10.7') { transitive = false } annotationProcessor ('zone.rong:mixinbooter:10.7') { transitive = false } // RetroFuturaGradle: String mixinBooter = modUtils.enableMixins('zone.rong:mixinbooter:10.7') // modUtils.enableMixins('zone.rong:mixinbooter:10.7', 'mod_id.mixins.refmap.json') << add refmap name as 2nd arg (optional) api (mixinBooter) { transitive = false } annotationProcessor (mixinBooter) { transitive = false } }

Pseudo-Changelog:

As of 4.2, MixinBooter's API has changed and all mods that uses mixins are encouraged to depend on MixinBooter, even those that mixin into vanilla/forge/library classes. To avoid mixin version mismatches with mods crashing trying to implement modded mixins (looking at you VanillaFix). Thanks to @embeddedt recommending and helping me introduce this change!
As of 5.0, MixinExtras by @LlamaLad7 is shaded. Available for developers to use.
As of 8.0, MixinBooter will now work from 1.8 - 1.12.2. One single build works with all these versions! (TODO: LiteLoader support?)
As of 8.4, MixinBooter actively attempts to be compatible with SpongeForge
As of 9.2, MixinBooter reinstates the older MixinLoader annotation for 1.8.x usages.
As of 10.0, MixinBooter follows Mixin 0.8.7

Tidbits:

Consult IEarlyMixinLoader for mixins that affects vanilla, forge, or any classes that is passed to the classloader extremely early (e.g. Guava).
Consult ILateMixinLoader for mixins that affects mods.
@MixinLoader annotation's ~~, as of 4.2, deprecated. The~~ functionality is akin to ILateMixinLoader. Both can be used at the same time, especially for 1.8.x versions where it is needed.