Simple Backpacks

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

Evidence

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

What it needs from Kiln

Mixin
net.fabricmc.fabric.api.resource.conditions.v1.ResourceCondition
net.fabricmc.fabric.api.resource.conditions.v1.ResourceConditionType
net.fabricmc.fabric.api.resource.conditions.v1.ResourceConditions
net.minecraft.core.NonNullList
net.minecraft.core.component.DataComponents
net.minecraft.network.codec.ByteBufCodecs
net.minecraft.network.codec.StreamCodec
net.minecraft.resources.RegistryOps
net.minecraft.resources.RegistryOps.RegistryInfoLookup
net.minecraft.tags.ItemTags
net.minecraft.tags.TagKey
net.minecraft.util.Mth
net.minecraft.util.Prediction
net.minecraft.world.Container
net.minecraft.world.ContainerHelper
net.minecraft.world.Containers
net.minecraft.world.SimpleMenuProvider
net.minecraft.world.entity.item.ItemEntity
net.minecraft.world.entity.player.Inventory
net.minecraft.world.inventory.AbstractContainerMenu
net.minecraft.world.inventory.MenuType
net.minecraft.world.inventory.Slot
net.minecraft.world.item.Item.TooltipContext
net.minecraft.world.item.ItemStackTemplate
net.minecraft.world.item.ItemUtils
net.minecraft.world.item.component.ItemContainerContents
net.minecraft.world.item.crafting.CraftingInput
net.minecraft.world.item.crafting.CraftingRecipe
net.minecraft.world.item.crafting.CraftingRecipe.CraftingBookInfo
net.minecraft.world.item.crafting.Ingredient
net.minecraft.world.item.crafting.NormalCraftingRecipe
net.minecraft.world.item.crafting.PlacementInfo
net.minecraft.world.item.crafting.Recipe
net.minecraft.world.item.crafting.Recipe.CommonInfo
net.minecraft.world.item.crafting.RecipeSerializer
net.minecraft.world.item.crafting.TransmuteRecipe
net.minecraft.world.item.crafting.display.ShapelessCraftingRecipeDisplay
net.minecraft.world.item.crafting.display.SlotDisplay
net.minecraft.world.item.crafting.display.SlotDisplay.ItemSlotDisplay
net.minecraft.world.item.crafting.display.SlotDisplay.ItemStackSlotDisplay
and 17 more

On the roadmap: Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

Small, medium and large backpacks. Dye them any color, then craft the next tier around one and your items and color carry over. No library mod, no extra menus!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file simplebackpacks-fabric-26.3-5.2.1.jar. The scan reads the mod's classes; it does not run them.

Reports from players

No reports from players yet.

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