Prototype compiled language built in Rust with LLVM.
Currently, Metal is currently not open source software. Metal will eventually open up and become fully open source, but for the time being, it's not open for contributions.
Use nightly Rust.
If you want to add a dependency, add it to the workspace Cargo.toml and then
in the crate that you want to use this dependency in specify that dependency as dep_name = { workspace = true }.
This makes updating deps much easier.