openSUSE Leap 15.5 was installed to Windows Subsystem for Linux in a previous page.
The instructions are derived from https://www.rust-lang.org/learn/get-started
Open a terminal for the Linux system.
Log in as the preferred user.
Install rustup:
sudo zypper install rustup
Use rustup to install the latest stable toolchain:
rustup install stable
Check the default toolchain name and cargo version:
rustup default
cargo --version
Change to the directory to store projects.
Run cargo new to create a new project:
cargo new hello-rust
It should return "Created binary (application) `hello-rust` package". If you see "error: rustup could not choose a version of cargo to run, because one wasn't specified explicitly, and no default is configured" then run rustup default stable.
Run the program, which will compile it as necessary:
cd hello-rust
cargo run hello-rust
The default Rust toolchain will target the system it is installed on. Binaries can be built for other platforms; this is a good idea, since most people are not running WSL+OpenSUSE.
Note that each user has their own list of targets and default target.
To set up the WASM/WASI target for the local user:
rustup target add wasm32-wasi
You can see the complete list by running rustup target list