+%post -n libyaz4 -p /sbin/ldconfig
+%postun -n libyaz4 -p /sbin/ldconfig
+
+%package -n libyaz4-devel
+Summary: Z39.50 Library - development package
+Group: Development/Libraries
+Requires: libyaz4 = %{version}, libxml2-devel, libxslt-devel, libicu-devel
+Conflicts: libyaz-devel
+
+%description -n libyaz4-devel
+Development libraries and includes for the libyaz package.
+
+%package -n yaz-illclient
+Summary: ILL client
+Group: Applications/Communication
+Requires: readline, libyaz4 = %{version}
+
+%description -n yaz-illclient
+yaz-illclient: an ISO ILL client.
+
+%package -n yaz-icu
+Summary: Command line utility for ICU utilities of YAZ
+Group: Applications/Communication
+Requires: libyaz4 = %{version}
+
+%description -n yaz-icu
+The yaz-icu program is a command-line based client which exposes the ICU
+chain facility of YAZ.
+