Paritem

Evidence

Ran on Kiln's test stand (2026-11-04): Paritem did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/block/state/properties/BlockSetType; ParitemClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/EntityRenderer.

What it needs from Kiln

• an access widener
• Mixin
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.math.Axis
• net.fabricmc.fabric.api.client.rendering.v1.BlockEntityRendererRegistry
• net.fabricmc.fabric.api.client.rendering.v1.EntityRendererRegistry
• net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder
• net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder.Factory
• net.fabricmc.fabric.api.registry.OxidizableBlocksRegistry
• 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.HopperScreen
• net.minecraft.client.model.geom.ModelLayers
• net.minecraft.client.renderer.RenderPipelines
• net.minecraft.client.renderer.blockentity.BlockEntityRenderer
• net.minecraft.client.renderer.blockentity.BlockEntityRendererProvider
• net.minecraft.client.renderer.blockentity.BlockEntityRendererProvider.Context
• net.minecraft.client.renderer.blockentity.state.CampfireRenderState
• net.minecraft.client.renderer.entity.EntityRendererProvider
• net.minecraft.client.renderer.entity.EntityRendererProvider.Context
• net.minecraft.client.renderer.entity.MinecartRenderer
• net.minecraft.client.renderer.feature.ModelFeatureRenderer
• net.minecraft.client.renderer.feature.ModelFeatureRenderer.CrumblingOverlay
• net.minecraft.client.renderer.item.ItemModelResolver
• net.minecraft.client.renderer.item.ItemStackRenderState
• net.minecraft.client.renderer.texture.OverlayTexture
• net.minecraft.core.BlockPos.MutableBlockPos
• net.minecraft.core.Direction.Axis
• net.minecraft.core.NonNullList
• net.minecraft.core.component.DataComponentGetter
• net.minecraft.core.component.DataComponentMap
• net.minecraft.core.component.DataComponentMap.Builder
• net.minecraft.core.component.DataComponentPatch
• net.minecraft.core.component.DataComponents
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket
• net.minecraft.network.syncher.EntityDataSerializers
• net.minecraft.network.syncher.SynchedEntityData
• net.minecraft.network.syncher.SynchedEntityData.Builder
• net.minecraft.stats.Stats
• net.minecraft.tags.BlockTags
• and 82 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

Parity across a bunch of block materials.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file paritem-1.2.1+26.3.jar. The scan reads the mod's classes; it does not run them.