Tails Legacy

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): TailsLegacy did not start: java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager; TailsLegacyClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/gui/components/events/GuiEventListener.

What it needs from Kiln

Mixin
com.mojang.authlib.GameProfile
com.mojang.blaze3d.pipeline.RenderTarget
com.mojang.blaze3d.platform.InputConstants.Key
com.mojang.blaze3d.platform.Lighting
com.mojang.blaze3d.platform.Lighting.Entry
com.mojang.blaze3d.platform.NativeImage
com.mojang.blaze3d.platform.NativeImage.Format
com.mojang.blaze3d.platform.Window
com.mojang.blaze3d.platform.cursor.CursorType
com.mojang.blaze3d.systems.RenderSystem
com.mojang.blaze3d.vertex.PoseStack
com.mojang.math.Axis
com.mojang.renderpearl.api.GpuFormat
com.mojang.renderpearl.api.buffers.GpuBuffer
com.mojang.renderpearl.api.buffers.GpuBufferSlice
com.mojang.renderpearl.api.buffers.GpuBufferSlice.MappedView
com.mojang.renderpearl.api.commands.CommandEncoder
com.mojang.renderpearl.api.device.GpuDevice
com.mojang.renderpearl.api.textures.GpuTexture
net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Disconnect
net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
net.fabricmc.fabric.api.client.rendering.v1.LivingEntityRenderLayerRegistrationCallback
net.fabricmc.fabric.api.client.rendering.v1.LivingEntityRenderLayerRegistrationCallback.RegistrationHelper
net.fabricmc.fabric.api.client.rendering.v1.PictureInPictureRendererRegistry
net.fabricmc.fabric.api.client.rendering.v1.PictureInPictureRendererRegistry.Context
net.fabricmc.fabric.api.client.rendering.v1.PictureInPictureRendererRegistry.Factory
net.fabricmc.fabric.api.client.rendering.v1.RenderStateDataKey
net.fabricmc.fabric.api.client.screen.v1.ScreenEvents
net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterExtract
net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterInit
net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents.Join
net.fabricmc.fabric.api.entity.event.v1.ServerPlayerEvents.Leave
net.fabricmc.fabric.api.event.EventFactory
net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
and 58 more

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

In the author's words

Adds a variety of tails, ears, wings, horns, and other parts to enhance your player model. A fork of Tails for newer (and older) versions with support for custom parts and more!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file TailsLegacy-4.0.4+26.3-fabric.jar. The scan reads the mod's classes; it does not run them.

Reports from players

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