Even though it's written in Rust, you can still use it in other languages like Python or Node.js. It compiles to a shared library file, which most SQLite clients support with `.loadExtension()` or another similarly named method.
This extension isn't the best example, since it's a thrown-together demo, but sqlite-ulid is a similar extension written in Rust that could be run anywhere, not just Rust
That being said, writing in Rust instead of C has many drawbacks (slightly slower, cross compiling, larger binary sizes, WASM is more difficult, statically compiling is complex, etc.). But for cases like this, many SQLite extensions I write in Rust are just light wrappers around extremely high quality Rust crates (like jiff), which makes my life easier and it "good enough"
This extension isn't the best example, since it's a thrown-together demo, but sqlite-ulid is a similar extension written in Rust that could be run anywhere, not just Rust
That being said, writing in Rust instead of C has many drawbacks (slightly slower, cross compiling, larger binary sizes, WASM is more difficult, statically compiling is complex, etc.). But for cases like this, many SQLite extensions I write in Rust are just light wrappers around extremely high quality Rust crates (like jiff), which makes my life easier and it "good enough"