DevJG's Fullbright

Evidence

Ran on Kiln's test stand (2026-11-04): Fullbright did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/command/v2/ClientCommandRegistrationCallback.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents
• net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientLifecycleEvents.ClientStarted
• net.minecraft.client.OptionInstance
• net.minecraft.client.Options
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.components.AbstractSliderButton
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.ChatComponent
• net.minecraft.client.gui.components.Tooltip
• net.minecraft.network.chat.ClickEvent
• net.minecraft.network.chat.ClickEvent.OpenUrl
• net.minecraft.network.chat.HoverEvent
• net.minecraft.network.chat.HoverEvent.ShowText
• net.minecraft.network.chat.Style
• net.minecraft.util.Mth
• net.minecraft.world.level.LightLayer
• net.minecraft.world.level.chunk.ChunkSource
• net.minecraft.world.level.lighting.LevelLightEngine
• net.minecraft.world.level.lighting.LightEngine
• Minecraft.execute()
• Minecraft.getCameraEntity()
• Minecraft.options
• Gui.hud
• GuiGraphicsExtractor.centeredText()
• GuiGraphicsExtractor.pose()
• Screen.extractRenderState()
• Component.copy()
• MutableComponent.withStyle()
• Level.getBrightness()
• Level.getChunkSource()
• Level.isDarkOutside()

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

The Future of FullBright

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file devjg-fullbright-26.3-3.1.0.jar. The scan reads the mod's classes; it does not run them.