Tweakeroo

Evidence

Ran on Kiln's test stand (2026-11-04): Tweakeroo did not start: java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.InputConstants.Key
• com.mojang.blaze3d.systems.RenderSystem
• io.netty.buffer.Unpooled
• 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.minecraft.client.DebugQueryHandler
• net.minecraft.client.MouseHandler
• net.minecraft.client.OptionInstance
• net.minecraft.client.Options
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.components.ChatComponent
• net.minecraft.client.gui.screens.CreateFlatWorldScreen
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.gui.screens.worldselection.CreateWorldScreen
• net.minecraft.client.gui.screens.worldselection.WorldCreationContext
• net.minecraft.client.gui.screens.worldselection.WorldCreationUiState
• net.minecraft.client.input.KeyEvent
• net.minecraft.client.input.MouseButtonEvent
• net.minecraft.client.multiplayer.ClientChunkCache
• net.minecraft.client.multiplayer.ClientLevel.ClientLevelData
• net.minecraft.client.multiplayer.MultiPlayerGameMode
• net.minecraft.client.multiplayer.chat.ChatAbilities
• net.minecraft.client.player.ClientInput
• net.minecraft.client.player.ItemActivation
• net.minecraft.client.renderer.extract.LevelExtractor
• net.minecraft.core.BlockPos.MutableBlockPos
• net.minecraft.core.Direction.Axis
• net.minecraft.core.GlobalPos
• net.minecraft.core.HolderGetter
• net.minecraft.core.HolderLookup.RegistryLookup
• net.minecraft.core.NonNullList
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponents
• net.minecraft.nbt.CompoundTag
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.chat.ClickEvent
• net.minecraft.network.chat.ClickEvent.SuggestCommand
• 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

Various client-side tweaks, such as hand restock, hotbar swap/cycle, flexible/fast block placement etc.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file tweakeroo-fabric-26.3-0.30.1.jar. The scan reads the mod's classes; it does not run them.