After delving into this, it seems Wasmer tried, but as they weren't standards compliant, adoption/ecosystem support never followed.
The Bytecode alliance is taking their time stabilizing wasi. wasip2 which is needed for the wasi-http realm this relies on has only really existed for a few months as a stable Rust target, and still misses a lot of the really cool features that will come with wasip3 like full async support.
I suspect Cloud providers will adopt wasi after 1.0, but that is likely years away. I don't think wasi-http will change much before then so now is the time to start building with it.
The Bytecode alliance is taking their time stabilizing wasi. wasip2 which is needed for the wasi-http realm this relies on has only really existed for a few months as a stable Rust target, and still misses a lot of the really cool features that will come with wasip3 like full async support.
I suspect Cloud providers will adopt wasi after 1.0, but that is likely years away. I don't think wasi-http will change much before then so now is the time to start building with it.