pywasm3 VS extism

It's an embedding of the wasm3 library, and it exposes a function, `wasm-test`, that can call a function without arguments from a simple WebAssembly module. I intend to update it to reach feature parity with, for example, the python embedding.

PyOdide isn't currently supported outside of browsers, though that might change.

Either way, I couldn't figure out how to do the above sequence of steps with any of the available Python WASM runtimes - they're all very under-documented at the moment, sadly. I tried all three of these:

- https://github.com/wasmerio/wasmer-python

- https://github.com/bytecodealliance/wasmtime-py

- https://github.com/wasm3/pywasm3

You might look at https://github.com/wasm3/pywasm3 . If nothing else, it’d presumably speed up your interpreter to have bindings to an established C based runtime rather than re implementing the runtime in python

Extism can be really useful for packaging up and running cross-language libraries!

The most clear information about it is at: https://extism.org, but its a bit focused on the primary use case for Extism, being a universal plugin system.

There is a C PDK (https://github.com/extism/c-pdk) which you'd probably want to use in a new wrapper around your library in C++, and compile it to wasm32 freestanding or WASI, but without emscripten. Extism doesn't currently have an interop layer to emscripten.

It may just be my own unique obsession to peek at the internals of .wasm, but if anyone else is curious:

https://modsurfer.dylibso.com/module?hash=ab6f4b2de9db171347...

u/nbittich - curious if you've tried to use your language as as a scripting language inside other apps? I took a peak at your browser wasm environment, and think we could hook up the `compute` entrypoint you have here[0], but I'm not certain what the `ctx` does without going super deep, and if it could be passed into an Extism function[1] (which is how I'd try to run it from within 16+ other languages).

[0]: https://github.com/nbittich/adana/blob/master/adana-script-w...

[1]: https://github.com/extism/extism

Yep, this is one of the initial motivations for creating Extism: https://github.com/extism/extism -- and it works across 16 host languages & 8 guest languages.

On the devx, there's definitely some rough edges around building and using Wasm. My company has been working on a framework to ease integrating Wasm into existing applications. One area it focuses on is providing easy data passing between the host program and the Wasm and vice versa. https://github.com/extism/extism We do not have WASI preview 2 support yet, but are interested in integrating it.

Extism handles this really well across 16 or so different languages - and you don’t need to write a whole IDL / schema.

https://github.com/extism/extism

It’s a general purpose framework for building with WebAssembly and sharing code across languages is a great way to put it to work.