How does it interface with the cards? IIRC the rust pcsc library used by Sequoia needed C libraries. I've been doing some NFC stuff too and was looking for a pure-rust solution if there was one.
On Windows and Mac it binds to system libraries. On Linux it works with pcsclite.
Btw I'm not aware of any tooling that's used by Sequoia, rather wrappers that use Sequoia and pcsc crate.