What were you trying to do that didn't work?In RHEL10 there is new major version of createrepo_c that provides a different default behavior in 3 ways:Different default compression - from gz to zstdDifferent compression for comps groups - only shipped compress with group typeNot generated yum3 DB metadata - supported only in RHEL7 and earlier versionAll detail are described in - https://fedoraproject.org/wiki/Changes/createrepo_c_1.0.0

The change must be properly documented.