solana-nostd-sha256 is used at run time in 5 crates (of which 1 optionally). It is a direct run-time dependency in 3 crates.

Depender (with downloads and own rev deps) solana-nostd-sha256 version
1.4K solana-secp256k1-schnorr optional ^0.1.3
200 solana-alt-bn128-bls ^0.1.3
1 solana-hmac-sha256 ^0.1.3