tectonic_bridge_harfbuzz is used at run time in 19 crates (of which 5 optionally). It is a direct run-time dependency in 2 crates.

Depender (with downloads and own rev deps) tectonic_bridge_harfbuzz version
750 1 tectonic_engine_xetex >=0.2.0, <1
750 2 tectonic_xetex_layout >=0.2.0, <1