configure ZLS build on save (disabled by default)

[paperclover]

this is not good enough to enable by default. ZLS and the VSCode extension do not properly handle things.

to try what i have:

• Build this patch: paperclover/zls@00195e6
• Point to it in .vscode/settings.json
• Zig: Build Workspace

it is very finicky. i think there is room in the market for a new extension that only implements compile on save. this extension can focus on conveying status of the compilation into the editor, including progress bars and errors.

CleanShot_2025-04-23_at_11.20.21.mp4.mov

[robobun]

^{Updated 12:46 PM PT - Apr 23rd, 2025}

❌ @paperclover, your commit dd4d165 has 2 failures in Build #15367:

• test/js/bun/spawn/spawn.test.ts - timeout on 🐧 3.21 x64
• test/js/third_party/body-parser/express-memory-leak.test.ts - 1 failing on 🍎 14 aarch64

---

🧪   try this PR locally:

bunx bun-pr 19223

[190n]

I couldn't get it to work -- I had to hit "Build Workspace" each time after saving, and the errors stayed after I fixed them. I used your fork of zls and I changed build on save back to true in settings.json.

But merging this won't break anything, at least.

[190n]

Suggested change

	"./build/debug/zls-cache/g"
	"./build/debug/zls-cache/g",