matiaskorhonen / ruby-wasmtime

Ruby Wasmtime

Proof of concept for Wasmtime × ruby.wasm integration.

Notes

my-ruby-app.wasm

Produced using wasi-vfs using these instructions (cribbed from the ruby.wasm repo):

# Download a prebuilt Ruby release
$ curl -LO https://github.com/ruby/ruby.wasm/releases/latest/download/ruby-3_2-wasm32-unknown-wasi-full.tar.gz
$ tar xfz ruby-3_2-wasm32-unknown-wasi-full.tar.gz

# Extract ruby binary not to pack itself
$ mv 3_2-wasm32-unknown-wasi-full/usr/local/bin/ruby ruby.wasm

# Put your app code
$ mkdir src
$ echo "puts 'Hello'" > src/my_app.rb

# Pack the whole directory under /usr and your app dir
$ wasi-vfs pack ruby.wasm --mapdir /src::./src --mapdir /usr::./3_2-wasm32-unknown-wasi-full/usr -o my-ruby-app.wasm

Run the embedded Ruby script

cargo run -r