Monkey Patches

What is Monkey Patches?

Monkey Patches is a technical utility mod designed to patch bugs and issues in other mods through the use of runtime patching. It is built for modpack developers and advanced users who need quick, modular fixes without waiting for upstream changes to be released.

Features

• Targeted Mixin-Based Patching Monkey Patches allows you to inject small, scoped fixes into third-party mods by applying mixins at runtime. This enables developers to patch bugs, bypass crash conditions, or correct logic errors in dependencies without modifying the original mod’s source.
• Non-Invasive and Configurable The mod is designed to be lightweight and non-intrusive. All patches are applied via mixin at load time, without replacing jar files or using coremod techniques. Each patch can be scoped to specific versions of the target mod, minimizing compatibility issues.
• Focused Patch Modules Monkey Patches uses a modular internal structure, allowing you to clearly organize patches by mod or version. This makes it easy to document, isolate, and manage what you’re overriding.
• Transparent Debugging Support Optional debug logging provides transparency for applied mixins and helps you verify that patches are correctly loaded and active. This is especially useful when debugging modpack launch issues.

How This Affects the User Experience

For modpack creators and technical users, Monkey Patches reduces downtime caused by known but unreleased bug fixes in popular mods. Instead of having to fork or wait for upstream patches, you can apply your own temporary fixes in a clean and trackable way.

For players, this results in more stable modpacks, fewer crashes, and fewer gameplay inconsistencies—especially in packs under active development or using snapshot mod versions.

Use Case Scenarios

• Fixing a crash caused by a version-specific bug in another mod.
• Overriding unsafe assumptions or edge case behavior that affect your modpack.
• Ensuring compatibility between mods that were not originally designed to work together.
• Temporarily patching issues before submitting a pull request or waiting on a new release.

Included Fixes

These fixes address bugs that are fixed in upstream repositories but not yet available in stable or public builds, or that haven't been fixed upstream yet. Monkey Patches provides a clean way to apply them in your modpack today.

Copper Age Backport Patches

• Fix copper armor having infinite durability (versions 0.1.4 and older) (Link to Issue)

Create Stuff 'N Additions Patches

• Make gadgets and tanks fillable in Create spouts and anything else supporting standard Neoforge fluid handling (Link to Issue)

Farmer's Delight Patches

• Fix an occasional NullPointerException crash caused by deprecated ModTags references being null in Farmer's Delight 1.3.1, seen with addons such as Fungi Delight (Link to Issue)

Just Enough Resources Patches

• Fix missing JER tabs (such as villager trades), crashes, and empty biome lists when using mods that add custom biomes, such as Vanilla Backport (Link to Issue)

KubeJS Patches

• Fix assumptions about concrete builder types in KubeJS that could cause ClassCastException when CustomBuilderObject instances are present in registries. (Link to Issue)

Patchouli Patches

• Fix registry access errors when books with custom book items load before their mod has registered its items, such as with Ars Nouveau (Link to Issue)

Physics Mod Patches

• Fix a crash when vine physics are unloaded, such as when enabling a resource pack with Sodium installed (Physics Mod 3.0.32) (Link to Issue)

Portable Tanks Patches

• Fix missing Create recipes in JEI (Link to Issue)

Rhino Patches

• Fix object signatures inside arrays (such as [Ljava/lang/String;) failing to parse in Rhino's class file writer (Link to Pull Request)

Satisfying Buttons Patches

• Fix a startup crash when Satisfying Buttons is used with FancyMenu 3.9.x (Link to Issue)

Subtle Effects Patches

• Fix crashes in Subtle Effects when also using End Remastered (Link to Issue)