Bayer is used at run time in 3 crates (of which 2 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) Bayer version
800 convert-image ^0.1
150 1 aravis optional ^0.1.5
1 ascom-alpaca dev ^0.1.5