imxrt-rt is used at run time in 2 crates (of which 2 optionally). It is a direct run-time dependency in 1 crate. It's used only as a dev dependency in 4 crates (of which 1 directly).

Depender (with downloads and own rev deps) imxrt-rt version
5 teensy4-bsp optional ^0.1.4
1.4K 4 imxrt-hal dev ^0.1