gensym is used at run time in 67 crates (of which 10 optionally). It is a direct run-time dependency in 9 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) gensym version
10K 30 futures-signals ^0.1.0
2.3K 1 static_str_ops ^0.1
1.1K libside ^0.1
550 1 godot-ffi ^0.1.1
130 crosstrait ^0.1
120 bittyset ^0.1.1
2 vineyard ^0.1
wasm-init ^0.1
hecs-component-provider ^0.1