Only Jugs

Evidence

Ran on Kiln's test stand (2026-11-04): OnlyJugsFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload; OnlyJugsFabricClient did not start: java.lang.NoClassDefFoundError: net/minecraft/world/entity/EntityTypes.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.NativeImage
• com.mojang.blaze3d.platform.cursor.CursorType
• com.mojang.blaze3d.platform.cursor.CursorTypes
• com.mojang.blaze3d.vertex.PoseStack
• net.fabricmc.loader.api.ModContainer
• net.fabricmc.loader.api.Version
• net.fabricmc.loader.api.metadata.ModMetadata
• net.minecraft.client.gui.components.AbstractWidget
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.CreateNarration
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.narration.NarratedElementType
• net.minecraft.client.gui.narration.NarrationElementOutput
• net.minecraft.client.gui.screens.inventory.InventoryScreen
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.model.geom.ModelLayers
• net.minecraft.client.model.player.PlayerModel
• net.minecraft.client.renderer.SubmitNodeCollector
• net.minecraft.client.renderer.entity.EntityRendererProvider
• net.minecraft.client.renderer.entity.EntityRendererProvider.Context
• net.minecraft.client.renderer.entity.EntityRenderers
• net.minecraft.client.renderer.entity.HumanoidMobRenderer
• net.minecraft.client.renderer.entity.state.AvatarRenderState
• net.minecraft.client.renderer.entity.state.EntityRenderState
• net.minecraft.client.renderer.entity.state.LivingEntityRenderState
• net.minecraft.client.renderer.state.level.CameraRenderState
• net.minecraft.client.renderer.texture.DynamicTexture
• net.minecraft.client.renderer.texture.TextureManager
• net.minecraft.core.ClientAsset
• net.minecraft.core.ClientAsset.ResourceTexture
• net.minecraft.core.ClientAsset.Texture
• net.minecraft.network.Connection
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.ClientboundCustomPayloadPacket
• net.minecraft.network.protocol.common.ServerboundCustomPayloadPacket
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.server.packs.resources.Resource
• and 25 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

Adds boobs with deformation physics.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file [26.3] Only Jugs [1.8.1].jar. The scan reads the mod's classes; it does not run them.