yayamlls

v0.1.8 · by home-operations · added 3 November 2026

YAML language server in Go: schema-driven diagnostics, completion, hover, and Flux rendering.

Language servers

How to install

With Forge Super installed, the button above opens the app on this extension, where you press Install. Nothing is installed until you do.

You can also open the Extensions panel in the app and search for yayamlls. The extension's id is yayamlls.

Don't have Forge Super yet? Download it here.

README

From the extension's repository, written by its authors and not by Mentenaz. See the source.

yayamlls for Zed

Registers yayamlls as a language server for Zed's built-in YAML language. The extension downloads the release binary matching your OS/arch on first use.

Develop / test locally

Zed → command palette → zed: install dev extension, then select this directory. Zed compiles the Rust crate to WASM (wasm32-wasip1) for you; you only need the toolchain installed (rustup target add wasm32-wasip1).

[!NOTE] Gram, a Zed fork, installs this same extension but compiles to wasm32-wasip2 instead. If you use both editors, install both targets — they coexist fine.

Make yayamlls the only YAML server

Zed bundles yaml-language-server. To run yayamlls instead, in ~/.config/zed/settings.json:

{
    "languages": {
        "YAML": {
            "language_servers": ["yayamlls", "!yaml-language-server"],
        },
    },
}

Configuration

Pass server options under the yayamlls LSP key; they are forwarded verbatim as initializationOptions:

{
    "lsp": {
        "yayamlls": {
            "binary": {
                "path": "/usr/local/bin/yayamlls", // optional: skip the download
            },
            "initialization_options": {
                "catalog": true,
                "schemas": {
                    "https://json.schemastore.org/github-workflow.json": [
                        ".github/workflows/*.yml",
                    ],
                },
            },
        },
    },
}

Publish

Open a PR adding this extension to zed-industries/extensions (commit Cargo.lock).