ark-ed-on-bls12-377-ext is used at run time in 4 crates (of which 3 optionally). It is a direct run-time dependency in 3 crates.

Depender (with downloads and own rev deps) ark-ed-on-bls12-377-ext version
120 sp-ark-ed-on-bls12-377 ^0.4.1
170 gp-crypto-ec-utils optional ^0.4.1
140 6 sp-crypto-ec-utils optional ^0.4.1