FFItemWeight

Evidence

Ran on Kiln's test stand (2026-11-04): it stopped at com.electronwill.nightconfig.core.ConfigFormat, a class from a jar nested inside the mod; Kiln does not unpack nested jars yet.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.platform.Window
• net.fabricmc.fabric.api.client.item.v1.ItemTooltipCallback
• 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.screen.v1.ScreenEvents
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterBackground
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.AfterInit
• net.fabricmc.fabric.api.client.screen.v1.ScreenEvents.Remove
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerEntityEvents.EquipmentChange
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.EndDataPackReload
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarting
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents.EndLevelTick
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Disconnect
• net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
• net.minecraft.client.gui.Hud
• net.minecraft.client.gui.screens.inventory.AbstractContainerScreen
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.core.NonNullList
• net.minecraft.core.RegistryAccess
• net.minecraft.core.RegistryAccess.Frozen
• net.minecraft.core.component.DataComponents
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.chat.Style
• net.minecraft.network.chat.TextColor
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.server.network.ServerGamePacketListenerImpl
• net.minecraft.server.packs.resources.Resource
• and 42 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

Adds weight and encumbrance built dynamically from crafting recipes and data. Insanely configurable.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file ffitemweight-0.10.3+26.3-fabric.jar. The scan reads the mod's classes; it does not run them.