const_fn is used at run time in 1,015 crates (of which 156 optionally). It is a direct run-time dependency in 9 crates. It's used at build time in 4 crates (). It's used only as a dev dependency in 54 crates.

Depender (with downloads and own rev deps) const_fn version
109K 20 tz-rs optional ^0.4.4
25K 2 utcnow ^0.4.9
9.0K 4 likely_stable ^0.4
250 2 awint_internals ^0.4
240 3 awint_core ^0.4
220 3 awint_ext ^0.4
2 janetrs_version ^0.4
1 zero_based_index optional ^0.4.9
1 zst optional ^0.4.9