BME680 is used at run time in 1 crate (of which 1 optionally). It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) BME680 version
bsec optional ^0.6.0
1 stm32g4xx-hal dev ^0.6.0
stm32g473-hal_oppe dev ^0.6.0