[RPF] Resource Packs Fusion

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): RpfFabric did not start: java.lang.NoSuchMethodError: 'boolean net.fabricmc.loader.api.FabricLoader.isModLoaded(java.lang.String)'.

What it needs from Kiln

an access widener
Mixin
net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
net.minecraft.client.gui.Hud
net.minecraft.client.gui.components.ChatComponent
net.minecraft.client.multiplayer.ClientRegistryLayer
net.minecraft.client.renderer.item.BundleSelectedItemSpecialRenderer
net.minecraft.client.renderer.item.ClientItem
net.minecraft.client.renderer.item.ClientItem.Properties
net.minecraft.client.renderer.item.CompositeModel
net.minecraft.client.renderer.item.ConditionalItemModel
net.minecraft.client.renderer.item.CuboidItemModelWrapper
net.minecraft.client.renderer.item.EmptyModel
net.minecraft.client.renderer.item.ItemModel
net.minecraft.client.renderer.item.ItemStackRenderState
net.minecraft.client.renderer.item.MissingItemModel
net.minecraft.client.renderer.item.RangeSelectItemModel
net.minecraft.client.renderer.item.SelectItemModel
net.minecraft.client.renderer.item.SpecialModelWrapper
net.minecraft.commands.arguments.IdentifierArgument
net.minecraft.core.LayeredRegistryAccess
net.minecraft.core.RegistryAccess
net.minecraft.core.RegistryAccess.Frozen
net.minecraft.core.component.DataComponents
net.minecraft.network.chat.ClickEvent
net.minecraft.network.chat.ClickEvent.OpenFile
net.minecraft.network.chat.HoverEvent
net.minecraft.network.chat.HoverEvent.ShowText
net.minecraft.network.chat.Style
net.minecraft.resources.FileToIdConverter
net.minecraft.server.packs.PackLocationInfo
net.minecraft.server.packs.PackResources
net.minecraft.server.packs.resources.Resource
net.minecraft.util.PlaceholderLookupProvider
net.minecraft.util.StrictJsonParser
net.minecraft.util.Util
net.minecraft.world.entity.ItemOwner
FabricLoader.isModLoaded()
Minecraft.gameDirectory
Minecraft.getModelManager()
Minecraft.reloadResourcePacks()
Gui.hud
and 4 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

Allows you to use 2 or more Resource Packs with item model definitions

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file RPF-1.4.10-beta-26.3-universal.jar. The scan reads the mod's classes; it does not run them.

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