# Java comparison dependencies These locks support `tools/perf_bench.py` (vanilla Fabric and performance-mod comparisons) and `tools/server_bench.py` (Fabric + Lithium). `tools/runtime.py` downloads and verifies the pinned Fabric libraries. Game files still come from the user's own Minecraft install. `mods.lock.json` pins Sodium, Lithium, FerriteCore, ImmediatelyFast and Fabric API with publisher URLs and hashes. `fabric.lock.json` pins the loader and its libraries. These are developer benchmark inputs.