The appstream repo includes the Judy package but Judy-devel is missing.
FWIW, Centos8 doesn’t have any -devel package
% find | grep Judy ./AppStream/Packages/Judy-1.0.5-18.module_el8.3.0+757+d382997d.x86_64.rpm ./AppStream/Packages/Judy-1.0.5-18.module_el8.4.0+697+2baf600e.x86_64.rpm ./AppStream/Packages/Judy-1.0.5-18.module_el8.3.0+599+c587b2e7.x86_64.rpm
Look in the ‘powertools’ repo.
Thanks jlehtone. I actually had powertools enabled. However, the trick was to realize that Judy-devel is in a module (mariadb-devel) and the module has to be enabled.