solana-epoch-rewards is used at run time in 163 crates (of which 8 optionally). It is a direct run-time dependency in 8 crates. It's used only as a dev dependency in 33 crates.

Depender (with downloads and own rev deps) solana-epoch-rewards version
296K 596 solana-program ^2.2.1
137K 37 solana-program-runtime =2.2.1
89K 17 solana-sysvar ^2.2.1
2.2K 4 litesvm ^2.2
950 5 mollusk-svm ^2.2
280 2 mollusk-svm-fuzz-fixture ^2.2
39K 28 solana-stake-program dev =2.2.1
37K 22 solana-bpf-loader-program dev =2.2.1