Enhanced Celestials 2: Core

Evidence

Ran on Kiln's test stand (2026-11-04): EnhancedCelestialsFabric did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/event/registry/FabricRegistryBuilder; EnhancedCelestialsFabricClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/chat/FormattedText.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.platform.Window
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayConnectionEvents.Join
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.event.registry.DynamicRegistries
• net.fabricmc.fabric.api.event.registry.DynamicRegistries.SyncOption
• net.minecraft.client.OptionInstance
• net.minecraft.client.OptionInstance.TooltipSupplier
• net.minecraft.client.gui.GuiGraphicsExtractor.HoveredTextEffects
• net.minecraft.client.gui.components.AbstractWidget
• net.minecraft.client.gui.components.Button
• net.minecraft.client.gui.components.Button.Builder
• net.minecraft.client.gui.components.Button.CreateNarration
• net.minecraft.client.gui.components.Button.OnPress
• net.minecraft.client.gui.components.CycleButton
• net.minecraft.client.gui.components.CycleButton.Builder
• net.minecraft.client.gui.components.CycleButton.OnValueChange
• net.minecraft.client.gui.components.Tooltip
• net.minecraft.client.gui.components.events.GuiEventListener
• net.minecraft.client.gui.screens.ConfirmLinkScreen
• net.minecraft.client.resources.language.ClientLanguage
• net.minecraft.client.resources.language.LanguageManager
• net.minecraft.client.server.IntegratedServer
• net.minecraft.commands.CommandSourceStack
• net.minecraft.commands.Commands
• net.minecraft.commands.Commands.CommandSelection
• net.minecraft.commands.arguments.ResourceKeyArgument
• net.minecraft.commands.arguments.ResourceOrTagKeyArgument
• net.minecraft.commands.arguments.ResourceOrTagKeyArgument.Result
• net.minecraft.core.HolderGetter
• net.minecraft.core.HolderSet
• net.minecraft.core.HolderSet.Named
• net.minecraft.core.NonNullList
• net.minecraft.core.RegistryAccess
• net.minecraft.core.component.DataComponents
• net.minecraft.core.registries.codec.RegistryFileCodec
• net.minecraft.core.registries.codec.RegistryFixedCodec
• net.minecraft.data.worldgen.BootstrapContext
• and 82 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

Enhanced Celestials 2: Core is a rewritten version of the first Enhanced Celestial's lunar event scheduling system and datapack loader. This mod has no content and functions solely as a library to hook up and create Lunar Events.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file Enhanced-Celestials-2-Core-Fabric-26.3-5.0.0.0.jar. The scan reads the mod's classes; it does not run them.