[opensuse-packaging] derived packages, e.g. openldap2-client

HI! Could someone enlighten me why some packages are derived from others? Example: https://build.opensuse.org/package/show/network:ldap/openldap2 This already generates several different RPMs. Derived from openldap2: https://build.opensuse.org/package/show/network:ldap/openldap2-client Both packages almost use the same .spec files and generate several RPMs. Why does openldap2 not simply generate additional client RPMs? Even the OpenLDAP server uses the client libs anyway. Ciao, Michael.