wasmsh-pyodide-runtime 0.4.0

Pyodide-backed wasmsh runtime assets for Python integrations

wasmsh-pyodide-runtime

Packaged Pyodide-backed wasmsh runtime assets for Python integrations.

This package bundles the custom Pyodide distribution and Node host script produced by the wasmsh build, and exposes stable helpers to locate them at runtime. It is the Python-side companion to the wasmsh-pyodide npm package.

Install

pip install wasmsh-pyodide-runtime

Usage

from wasmsh_pyodide_runtime import get_dist_dir, get_asset_path, get_node_host_script

# Path to the packaged Pyodide distribution directory
dist = get_dist_dir()

# Path to a specific asset (e.g., the WASM binary)
wasm = get_asset_path("pyodide.asm.wasm")

# Path to the Node host script (used by langchain-wasmsh)
host = get_node_host_script()

Reference

get_dist_dir() -> Path

Returns the directory containing the packaged Pyodide assets (pyodide.asm.js, pyodide.asm.wasm, python_stdlib.zip, etc.).

get_asset_path(name: str) -> Path

Returns the path to a specific asset file within the distribution directory.

get_node_host_script() -> Path

Returns the path to the packaged node-host.mjs script. This is the entrypoint that langchain-wasmsh launches as a Node.js child process to host the Pyodide/Emscripten runtime.

Explanation

This package exists so that Python consumers (like langchain-wasmsh) can depend on a single PyPI package to get the wasmsh runtime assets, without needing to install npm or run a build. The assets are identical to those in the wasmsh-pyodide npm package — the tools/pyodide/package-runtime-assets.mjs script copies them into both package layouts from the same build output.