etk-asm is both an executable binary that can be run, and a library that can be used in Rust programs.
Installing the eas executable
Assuming you have Rust/Cargo installed, run this command in a terminal:
cargo install etk-asm
It will make the eas command available in your PATH if you've allowed the PATH to be modified when installing Rust. cargo uninstall etk-asm uninstalls.
Adding etk_asm library as a dependency
Run this command in a terminal, in your project's directory:
cargo add etk-asm
To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:
etk-asm = "0.3.0"
The etk_asm library will be automatically available globally.
Read the etk_asm library documentation.