# Objective
Bumps `wasi-sdk` to v34 that is based on LLVM 23.1 which includes [a
compile time and memory usage
fix](https://github.com/llvm/llvm-project/pull/181755) for tree-sitter
grammars. It speeds up every grammar's compile time and reduces compile
memory usage unlocking big grammars that were impossible to compile
before to be submitted to Zed extensions.
Drive-by added additional wasi-sdk targets for the rest of the supported
architectures (by wasi-sdk), if riscv is unwanted I can remove it but it
should not create any problems (I think).
Also noticed the `download-wasi-sdk` script had `OS=mingw` which wasn't
even in the artifact name on v25.
## Testing
Compiled, ran and compiled my [big
grammar](https://github.com/usagi-coffee/tree-sitter-abl) on it, that
wouldn't compile at all pre-llvm 23.
## Self-Review Checklist:
- [X] I've reviewed my own diff for quality, security, and reliability
---
Release Notes:
- Fixed compiling dev extensions with big Tree-sitter grammars.
- Fixed compiling dev extensions on Windows ARM64.
- Added wasi-sdk installation invalidation.
---------
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
a3e93fffaaKamil Jakubus committed on 9/9/2026, 3:16:15 PM· committed by GitHubparente9d2934