la-arena is used at run time in 51 crates. It is a direct run-time dependency in 6 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) la-arena version
40K 12 ra_ap_base_db ^0.3.1
40K 4 ra_ap_hir_def ^0.3.1
40K 3 ra_ap_hir_ty ^0.3.1
40K 8 ra_ap_project_model ^0.3.1
13K 14 ra_ap_span ^0.3.1
650 1 pavexc ^0.3