Please branch and build libmodbus in epel10. If you do not wish to maintain libmodbus in epel10, or do not think you will be able to do this in a timely manner, the epel-packager-sig would be happy to be a co-maintainer of the package; please add the epel-packager-sig group through https://src.fedoraproject.org/rpms/libmodbus/addgroup and grant it commit access, or collaborator access on epel* branches. Please also add me as a co-maintainer (FAS: jonathanspw) through https://src.fedoraproject.org/rpms/libmodbus/adduser