Vehicle Upgrade

Evidence

Ran on Kiln's test stand (2026-11-04): VehicleUpgradeFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/util/thread/BlockableEventLoop; VehicleUpgradeFabricClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/gui/components/debug/DebugScreenEntry.

What it needs from Kiln

• an access widener
• Mixin
• net.minecraft.advancements.triggers.CriteriaTriggers
• net.minecraft.advancements.triggers.PlayerInteractTrigger
• net.minecraft.client.MouseHandler
• net.minecraft.client.OptionInstance
• net.minecraft.client.Options
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.ImageButton
• net.minecraft.client.gui.components.WidgetSprites
• net.minecraft.client.gui.components.debug.DebugScreenDisplayer
• net.minecraft.client.gui.components.debug.DebugScreenEntries
• net.minecraft.client.gui.components.debug.DebugScreenEntry
• net.minecraft.client.gui.screens.MenuScreens
• net.minecraft.client.gui.screens.MenuScreens.ScreenConstructor
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.client.gui.screens.inventory.AbstractMountInventoryScreen
• net.minecraft.client.gui.screens.inventory.CreativeModeInventoryScreen
• net.minecraft.client.gui.screens.inventory.InventoryScreen
• net.minecraft.client.input.CharacterEvent
• net.minecraft.client.multiplayer.MultiPlayerGameMode
• net.minecraft.client.player.FirstPersonHandsAndItems
• net.minecraft.client.renderer.entity.state.EntityRenderState
• net.minecraft.client.renderer.entity.state.LivingEntityRenderState
• net.minecraft.data.AtlasIds
• net.minecraft.network.chat.FormattedText
• net.minecraft.network.chat.contents.objects.AtlasSprite
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.server.TickTask
• net.minecraft.tags.EntityTypeTags
• net.minecraft.util.ARGB
• net.minecraft.util.Mth
• net.minecraft.util.Util
• net.minecraft.util.context.ContextKey
• net.minecraft.util.thread.BlockableEventLoop
• net.minecraft.world.SimpleContainer
• net.minecraft.world.SimpleMenuProvider
• net.minecraft.world.effect.MobEffect
• net.minecraft.world.effect.MobEffects
• net.minecraft.world.entity.EntityAttachment
• and 80 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

Bring tons of quality-of-life improvements to your rides. Enjoy more reliable, and more capable mounts.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file vehicleupgrade-v26.3.0-mc26.3.x+fabric.jar. The scan reads the mod's classes; it does not run them.