Mycelium Leather

Evidence

Ran on Kiln's test stand (2026-11-04): MyceliumLeatherMod did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/levelgen/feature/AbstractHugeMushroomFeature; ModCustomEntityClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/model/geom/ModelLayerLocation.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.biome.v1.BiomeModifications
• net.fabricmc.fabric.api.biome.v1.BiomeSelectors
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry.TexturedLayerDefinitionProvider
• net.fabricmc.fabric.api.creativetab.v1.FabricCreativeModeTab
• net.fabricmc.fabric.api.datagen.v1.provider.SimpleFabricLootTableSubProvider
• net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder
• net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder.Factory
• net.fabricmc.fabric.api.object.builder.v1.entity.FabricDefaultAttributeRegistry
• net.fabricmc.fabric.api.object.builder.v1.world.poi.PoiHelper
• net.minecraft.advancements.triggers.BredAnimalsTrigger
• net.minecraft.advancements.triggers.CriteriaTriggers
• net.minecraft.client.animation.AnimationChannel
• net.minecraft.client.animation.AnimationChannel.Interpolation
• net.minecraft.client.animation.AnimationChannel.Interpolations
• net.minecraft.client.animation.AnimationChannel.Target
• net.minecraft.client.animation.AnimationChannel.Targets
• net.minecraft.client.animation.AnimationDefinition
• net.minecraft.client.animation.AnimationDefinition.Builder
• net.minecraft.client.animation.Keyframe
• net.minecraft.client.animation.KeyframeAnimation
• net.minecraft.client.animation.KeyframeAnimations
• net.minecraft.client.gui.screens.MenuScreens
• net.minecraft.client.gui.screens.MenuScreens.ScreenConstructor
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.model.EntityModel
• net.minecraft.client.model.geom.ModelLayerLocation
• net.minecraft.client.model.geom.ModelPart
• net.minecraft.client.model.geom.PartPose
• net.minecraft.client.model.geom.builders.CubeDeformation
• net.minecraft.client.model.geom.builders.CubeListBuilder
• net.minecraft.client.model.geom.builders.LayerDefinition
• net.minecraft.client.model.geom.builders.MeshDefinition
• net.minecraft.client.model.geom.builders.PartDefinition
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.client.renderer.block.BlockModelRenderState
• net.minecraft.client.renderer.entity.AgeableMobRenderer
• net.minecraft.client.renderer.entity.EntityRendererProvider
• net.minecraft.client.renderer.entity.EntityRendererProvider.Context
• net.minecraft.client.renderer.entity.EntityRenderers
• and 81 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

This mod adds an additional way to get leather and ink without harming (passive) mobs.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file mycelium-leather-1.2.1-26.3.jar. The scan reads the mod's classes; it does not run them.