We talked about using %patch, but in that case I would need a tarball of systemd in rpm-macros package which depends on xz which is part of many circles.

OBS-URL: https://build.opensuse.org/package/show/Base:System/systemd?expand=0&rev=399

systemd.spec

@@ -105,6 +105,7 @@ Source6:        baselibs.conf
 Source7:        libgcrypt.m4
 Source8:        systemd-journald.init
 Source9:        nss-myhostname-config
+Source10:       macros.systemd.upstream
 
 Source1060:     boot.udev
 Source1061:     write_dev_root_rule
@@ -210,9 +211,7 @@ Summary:        Development headers for systemd
 License:        LGPL-2.1+
 Group:          Development/Libraries/C and C++
 Requires:       %{name} = %{version}
-%if 0%{suse_version} > 1230
 Requires:       systemd-rpm-macros
-%endif
 %if 0%{?bootstrap}
 Conflicts:      systemd-devel
 %endif
@@ -365,6 +364,8 @@ This package marks the installation to not use syslog but only the journal.
 
 %prep
 %setup -q -n systemd-%{version}
+echo "Checking whether upstream rpm macros changed..."
+[ -z "`diff -Naru "%{S:10}" src/core/macros.systemd.in`" ] || exit 1
 
 # only needed for bootstrap
 %if 0%{?bootstrap}
@@ -488,13 +489,7 @@ sed -ie "s|@@PREFIX@@|%{_prefix}/lib/udev|g" %{S:1062}
 install -m644 -D %{S:1062} $RPM_BUILD_ROOT/%{_prefix}/lib/systemd/system/systemd-udev-root-symlink.service
 mkdir -p $RPM_BUILD_ROOT/%{_prefix}/lib/systemd/system/basic.target.wants
 ln -sf ../systemd-udev-root-symlink.service $RPM_BUILD_ROOT/%{_prefix}/lib/systemd/system/basic.target.wants
-
-%if 0%{suse_version} < 1310
-mkdir -p %{buildroot}%{_sysconfdir}/rpm
-install -m644 %{S:4} %{buildroot}%{_sysconfdir}/rpm
-%else
 rm -rf %{buildroot}%{_sysconfdir}/rpm
-%endif
 find %{buildroot} -type f -name '*.la' -delete
 mkdir -p %{buildroot}/{sbin,var/lib/systemd/sysv-convert,var/lib/systemd/migrated} %{buildroot}/usr/lib/systemd/{system-generators,user-generators,system-preset,user-preset,system/halt.target.wants,system/kexec.target.wants,system/poweroff.target.wants,system/reboot.target.wants}