It's used at build time in 13 crates (10 directly).

Depender (with downloads and own rev deps) pagetop-build version
950 pagetop-bootsier build ^0.0
850 pagetop-bulmix build ^0.0
800 pagetop-mdbook build ^0.0
600 pagetop-hljs build ^0.0
220 1 pagetop-jquery build ^0.0
220 pagetop-minimal build ^0.0
130 pagetop-megamenu build ^0.0
pagetop-homedemo build ^0.0
12 pagetop build ^0.0
pagetop-aliner build ^0.0