MixinBooter
ModThe Mixin Library for 1.8 - 1.12.2.
Type
Mod
Modrinth Downloads
1,881,352
Modrinth ID
G1ckZuWK
Last Updated
Sep 10, 2026
Description
MixinBooter
Allows any mixins that work on mods to work effortlessly on 1.8 - 1.12.2
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Current Mixin Version: CleanMix 0.2.9 by CleanroomMC, a fork of SpongePowered/Fabric Mixin (0.8.7)
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Current MixinExtra Version: 0.5.4
Pseudo-Changelog:
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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!
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As of 5.0, MixinExtras by @LlamaLad7 is shaded. Available for developers to use.
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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?)
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As of 8.4, MixinBooter actively attempts to be compatible with SpongeForge
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As of 9.2, MixinBooter reinstates the older MixinLoader annotation for 1.8.x usages.
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As of 10.0, MixinBooter follows Mixin 0.8.7
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As of 11.0, MixinBooter is built on CleanMix. As an effort to create an unified backend with Cleanroom.
- No longer would you need to declare dependencies for the annotation processor yourself.
- Also adds a config file (config/mixinbooter.cfg) to blacklist mixin configs and toggle debug options
- Dedicated logs/mixinbooter.log mixin log. With ability to trace class-loading for precise debugging.
- Allows traditional MixinConfig + MixinConnector manifest attribute entries to be fully involved in the ecosystem
- Mod discovery for mixin owners, better isModLoaded checks
- Suppresses Forge's corrupt zip warnings
- Phased out mixin "phases"
For Developers ~ Getting Started:
- Add CleanroomMC's repository and depend on MixinBooter's maven entry:
- Pick how to register your mixin configurations. MixinBooter supports lots of approaches:
(As of 11.0, early/late divide is no longer present, therefore IEarly/ILateMixinLoaders are deprecated)
- MixinConfigs manifest attribute: no loader class needed. Add a space-separated list of your mixin configuration names to your jar's manifest. MixinBooter reads it straight from the jar's manifest and registers them.
- MixinConnector manifest attribute: register configs programmatically. Point it at a class implementing org.spongepowered.asm.mixin.connect.IMixinConnector, its connect() is called during boot, where you call Mixins.addConfiguration(...) yourself.
Both manifest attributes are set on your jar task:
jar { manifest { attributes( 'MixinConfigs': 'mixins.mymod.json', 'MixinConnector': 'com.example.mymod.MyMixinConnector' ) } } public class MyMixinConnector implements IMixinConnector { @Override public void connect() { // Check if mod is loaded before registering? // Possible with zone.rong.mixinbooter.service.ModDiscoverer.isModPresent(String modId) Mixins.addConfiguration("mixins.mymod.json"); } }Compatibility
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