bitcoinsecp256k1-modinv is used at run time in 94 crates. It is a direct run-time dependency in 3 crates.

Depender (with downloads and own rev deps) bitcoinsecp256k1-modinv version
260 6 bitcoinsecp256k1-scalar ^0.1.16-alpha.0
260 4 bitcoinsecp256k1-field ^0.1.16-alpha.0
260 11 bitcoin-secp256k1 ^0.1.16-alpha.0