Skyboxify

Evidence

Ran on Kiln's test stand (2026-11-04): SkyboxifyClient did not start: java.lang.NoClassDefFoundError: net/minecraft/server/packs/resources/PreparableReloadListener.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.cursor.CursorTypes
• com.mojang.blaze3d.systems.RenderSystem
• com.mojang.blaze3d.systems.RenderSystem.AutoStorageIndexBuffer
• com.mojang.blaze3d.systems.SamplerCache
• com.mojang.blaze3d.vertex.BufferBuilder
• com.mojang.blaze3d.vertex.ByteBufferBuilder
• com.mojang.blaze3d.vertex.DefaultVertexFormat
• com.mojang.blaze3d.vertex.MeshData
• com.mojang.blaze3d.vertex.MeshData.DrawState
• com.mojang.blaze3d.vertex.VertexConsumer
• com.mojang.math.Axis
• com.mojang.renderpearl.api.GpuFormat
• com.mojang.renderpearl.api.buffers.GpuBuffer
• com.mojang.renderpearl.api.commands.RenderPass
• com.mojang.renderpearl.api.device.GpuDevice
• com.mojang.renderpearl.api.pipeline.BlendFactor
• com.mojang.renderpearl.api.pipeline.BlendFunction
• com.mojang.renderpearl.api.pipeline.ColorTargetState
• com.mojang.renderpearl.api.pipeline.PrimitiveTopology
• com.mojang.renderpearl.api.pipeline.RenderPipeline
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Builder
• com.mojang.renderpearl.api.pipeline.RenderPipeline.Snippet
• com.mojang.renderpearl.api.textures.FilterMode
• com.mojang.renderpearl.api.textures.GpuSampler
• com.mojang.renderpearl.api.vertex.VertexFormat
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents.EndLevelTick
• net.fabricmc.fabric.api.resource.v1.ResourceLoader
• net.minecraft.client.Camera
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.renderer.BindGroupLayouts
• net.minecraft.client.renderer.DynamicGpuData
• net.minecraft.client.renderer.GameRenderer
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.client.renderer.texture.AbstractTexture
• net.minecraft.client.renderer.texture.TextureManager
• net.minecraft.network.chat.CommonComponents
• and 46 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

A skybox mod that allows you to use OptiFine skies in Fabric 1.21+

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file skyboxify-3.4+26.3-fabric.jar. The scan reads the mod's classes; it does not run them.