systemd: Upgrade 219 -> 225

Drop patches that were straight backports from upstream

MIT licence was unused and dropped from systemd sources
for more details see
https://github.com/systemd/systemd/commit/8f1e0c5f38cdf7e401ab4d2bb93ad816d08e7715

Drop gtkdoc dependency since libudev API documentation has been converted from gtkdoc into man pages
Remove packaging gudev as it has moved to separate repository outside
systemd

For more details see
https://github.com/systemd/systemd/commit/2375607039517c88df51ef16ddbb624ec1c10654

package newly added script for xorg to be usable with systemd --user
intance
For more details see
https://github.com/systemd/systemd/commit/1401ec2d34bcde406ced531a72dc46ebaf332594

machinectl now has shell support

private-zone DHCP options are supported by systemd-networkd

For complete differences between two releases run
git log --oneline v219..v225
in systemd git clone

Change-Id: I998e652382950a3c74c4839f3767ef8bef23d88f
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 413 insertions, 0 deletions

diff --git a/meta/recipes-core/systemd/systemd_225.bb b/meta/recipes-core/systemd/systemd_225.bb
new file mode 100644
index 0000000000..2dc8884839
--- /dev/null
+++ b/meta/recipes-core/systemd/systemd_225.bb
@@ -0,0 +1,413 @@
+SUMMARY = "A System and service manager"
+HOMEPAGE = "http://www.freedesktop.org/wiki/Software/systemd"
+
+DESCRIPTION = "systemd is a system and service manager for Linux, compatible with \
+SysV and LSB init scripts. systemd provides aggressive parallelization \
+capabilities, uses socket and D-Bus activation for starting services, \
+offers on-demand starting of daemons, keeps track of processes using \
+Linux cgroups, supports snapshotting and restoring of the system \
+state, maintains mount and automount points and implements an \
+elaborate transactional dependency-based service control logic. It can \
+work as a drop-in replacement for sysvinit."
+
+LICENSE = "GPLv2 & LGPLv2.1"
+LIC_FILES_CHKSUM = "file://LICENSE.GPL2;md5=751419260aa954499f7abaabaa882bbe \
+                    file://LICENSE.LGPL2.1;md5=4fbd65380cdd255951079008b364516c"
+
+PROVIDES = "udev"
+
+PE = "1"
+
+DEPENDS = "kmod docbook-sgml-dtd-4.1-native intltool-native gperf-native acl readline dbus libcap libcgroup glib-2.0 qemu-native util-linux"
+
+SECTION = "base/shell"
+
+inherit useradd pkgconfig autotools perlnative update-rc.d update-alternatives qemu systemd ptest gettext
+
+SRCREV = "e1439a1472c5f691733b8ef10e702beac2496a63"
+
+PV = "225+git${SRCPV}"
+
+SRC_URI = "git://github.com/systemd/systemd.git;protocol=git \
+           file://0003-binfmt-Don-t-install-dependency-links-at-install-tim.patch \
+           file://0004-configure-Check-for-additional-features-that-uclibc-.patch \
+           file://0005-nspawn-Use-execvpe-only-when-libc-supports-it.patch \
+           file://0006-journal-Use-posix-fallocate-only-if-available.patch \
+           file://0007-util-Use-mkostemp-only-if-libc-supports-it.patch \
+           file://0008-util-bypass-unimplemented-_SC_PHYS_PAGES-system-conf.patch \
+           file://0009-sysv-generator-add-support-for-executing-scripts-und.patch \
+           file://0010-Make-root-s-home-directory-configurable.patch \
+           file://0011-systemd-user-avoid-using-system-auth.patch \
+           file://0014-Revert-rules-remove-firmware-loading-rules.patch \
+           file://0015-Revert-udev-remove-userspace-firmware-loading-suppor.patch \
+           file://touchscreen.rules \
+           file://00-create-volatile.conf \
+           file://init \
+           file://run-ptest \
+          "
+SRC_URI_append_qemuall = "file://qemuall_io_latency-core-device.c-Change-the-default-device-timeout-to-2.patch"
+
+S = "${WORKDIR}/git"
+
+SRC_URI_append_libc-uclibc = "\
+            file://0001-units-Prefer-getty-to-agetty-in-console-setup-system.patch \
+           "
+LDFLAGS_append_libc-uclibc = " -lrt"
+
+GTKDOC_DOCDIR = "${S}/docs/"
+
+PACKAGECONFIG ??= "xz ldconfig \
+                   ${@bb.utils.contains('DISTRO_FEATURES', 'pam', 'pam', '', d)} \
+                   ${@bb.utils.contains('DISTRO_FEATURES', 'x11', 'xkbcommon', '', d)} \
+                   ${@bb.utils.contains('DISTRO_FEATURES', 'selinux', 'selinux', '', d)} \
+                  "
+
+PACKAGECONFIG[journal-upload] = "--enable-libcurl,--disable-libcurl,curl"
+# Sign the journal for anti-tampering
+PACKAGECONFIG[gcrypt] = "--enable-gcrypt,--disable-gcrypt,libgcrypt"
+# regardless of PACKAGECONFIG, libgcrypt is always required to expand
+# the AM_PATH_LIBGCRYPT autoconf macro
+DEPENDS += "libgcrypt"
+# Compress the journal
+PACKAGECONFIG[xz] = "--enable-xz,--disable-xz,xz"
+PACKAGECONFIG[cryptsetup] = "--enable-libcryptsetup,--disable-libcryptsetup,cryptsetup"
+PACKAGECONFIG[microhttpd] = "--enable-microhttpd,--disable-microhttpd,libmicrohttpd"
+PACKAGECONFIG[elfutils] = "--enable-elfutils,--disable-elfutils,elfutils"
+PACKAGECONFIG[resolved] = "--enable-resolved,--disable-resolved"
+PACKAGECONFIG[networkd] = "--enable-networkd,--disable-networkd"
+PACKAGECONFIG[libidn] = "--enable-libidn,--disable-libidn,libidn"
+PACKAGECONFIG[audit] = "--enable-audit,--disable-audit,audit"
+PACKAGECONFIG[manpages] = "--enable-manpages,--disable-manpages,libxslt-native xmlto-native docbook-xml-dtd4-native docbook-xsl-stylesheets-native"
+PACKAGECONFIG[pam] = "--enable-pam,--disable-pam,libpam"
+# Verify keymaps on locale change
+PACKAGECONFIG[xkbcommon] = "--enable-xkbcommon,--disable-xkbcommon,libxkbcommon"
+# Update NAT firewall rules
+PACKAGECONFIG[iptc] = "--enable-libiptc,--disable-libiptc,iptables"
+PACKAGECONFIG[ldconfig] = "--enable-ldconfig,--disable-ldconfig,,"
+PACKAGECONFIG[selinux] = "--enable-selinux,--disable-selinux,libselinux"
+PACKAGECONFIG[valgrind] = "ac_cv_header_valgrind_memcheck_h=yes ac_cv_header_valgrind_valgrind_h=yes ,ac_cv_header_valgrind_memcheck_h=no ac_cv_header_valgrind_valgrind_h=no ,valgrind"
+
+CACHED_CONFIGUREVARS += "ac_cv_path_KILL=${base_bindir}/kill"
+CACHED_CONFIGUREVARS += "ac_cv_path_KMOD=${base_bindir}/kmod"
+CACHED_CONFIGUREVARS += "ac_cv_path_QUOTACHECK=${sbindir}/quotacheck"
+CACHED_CONFIGUREVARS += "ac_cv_path_QUOTAON=${sbindir}/quotaon"
+CACHED_CONFIGUREVARS += "ac_cv_path_SULOGIN=${base_sbindir}/sulogin"
+
+# Helper variables to clarify locations.  This mirrors the logic in systemd's
+# build system.
+rootprefix ?= "${base_prefix}"
+rootlibdir ?= "${base_libdir}"
+rootlibexecdir = "${rootprefix}/lib"
+
+CACHED_CONFIGUREVARS_class-target = "\
+                         ac_cv_path_MOUNT_PATH=${base_bindir}/mount \
+                         ac_cv_path_UMOUNT_PATH=${base_bindir}/umount \
+                         ac_cv_path_KMOD=${base_bindir}/kmod \
+                         ac_cv_path_KILL=${base_bindir}/kill \
+                         ac_cv_path_SULOGIN=${base_sbindir}/sulogin \
+                         ac_cv_path_KEXEC=${sbindir}/kexec \
+                         ac_cv_path_QUOTACHECK=${sbindir}/quotacheck \
+                         ac_cv_path_QUOTAON=${sbindir}/quotaon \
+			 "
+
+EXTRA_OECONF = " --with-rootprefix=${rootprefix} \
+                 --with-rootlibdir=${rootlibdir} \
+                 --with-roothomedir=${ROOT_HOME} \
+                 --disable-coredump \
+                 --enable-split-usr \
+                 --without-python \
+                 --with-sysvrcnd-path=${sysconfdir} \
+                 --with-firmware-path=/lib/firmware \
+               "
+# uclibc does not have NSS
+EXTRA_OECONF_append_libc-uclibc = " --disable-myhostname "
+
+do_configure_prepend() {
+	export NM="${HOST_PREFIX}gcc-nm"
+	export AR="${HOST_PREFIX}gcc-ar"
+	export RANLIB="${HOST_PREFIX}gcc-ranlib"
+	export KMOD="${base_bindir}/kmod"
+	if [ -d ${S}/units.pre_sed ] ; then
+		cp -r ${S}/units.pre_sed ${S}/units
+	else
+		cp -r ${S}/units ${S}/units.pre_sed
+	fi
+	sed -i '/ln --relative --help/d' ${S}/configure.ac
+	sed -i -e 's:\$(LN_S) --relative -f:lnr:g' ${S}/Makefile.am
+	sed -i -e 's:\$(LN_S) --relative:lnr:g' ${S}/Makefile.am
+}
+
+do_install() {
+	autotools_do_install
+	install -d ${D}/${base_sbindir}
+	# Provided by a separate recipe
+	rm ${D}${systemd_unitdir}/system/serial-getty* -f
+
+	# Provide support for initramfs
+	[ ! -e ${D}/init ] && ln -s ${rootlibexecdir}/systemd/systemd ${D}/init
+	[ ! -e ${D}/${base_sbindir}/udevd ] && ln -s ${rootlibexecdir}/systemd/systemd-udevd ${D}/${base_sbindir}/udevd
+
+	# Create machine-id
+	# 20:12 < mezcalero> koen: you have three options: a) run systemd-machine-id-setup at install time, b) have / read-only and an empty file there (for stateless) and c) boot with / writable
+	touch ${D}${sysconfdir}/machine-id
+
+
+	install -d ${D}${sysconfdir}/udev/rules.d/
+	install -d ${D}${sysconfdir}/tmpfiles.d
+	install -m 0644 ${WORKDIR}/*.rules ${D}${sysconfdir}/udev/rules.d/
+
+	install -m 0644 ${WORKDIR}/00-create-volatile.conf ${D}${sysconfdir}/tmpfiles.d/
+
+	if ${@bb.utils.contains('DISTRO_FEATURES','sysvinit','true','false',d)}; then
+		install -d ${D}${sysconfdir}/init.d
+		install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/systemd-udevd
+		sed -i s%@UDEVD@%${rootlibexecdir}/systemd/systemd-udevd% ${D}${sysconfdir}/init.d/systemd-udevd
+	fi
+
+	chown root:systemd-journal ${D}/${localstatedir}/log/journal
+
+        # Delete journal README, as log can be symlinked inside volatile.
+        rm -f ${D}/${localstatedir}/log/README
+
+	# Create symlinks for systemd-update-utmp-runlevel.service
+	install -d ${D}${systemd_unitdir}/system/graphical.target.wants
+	install -d ${D}${systemd_unitdir}/system/multi-user.target.wants
+	install -d ${D}${systemd_unitdir}/system/poweroff.target.wants
+	install -d ${D}${systemd_unitdir}/system/reboot.target.wants
+	install -d ${D}${systemd_unitdir}/system/rescue.target.wants
+	ln -sf ../systemd-update-utmp-runlevel.service ${D}${systemd_unitdir}/system/graphical.target.wants/systemd-update-utmp-runlevel.service
+	ln -sf ../systemd-update-utmp-runlevel.service ${D}${systemd_unitdir}/system/multi-user.target.wants/systemd-update-utmp-runlevel.service
+	ln -sf ../systemd-update-utmp-runlevel.service ${D}${systemd_unitdir}/system/poweroff.target.wants/systemd-update-utmp-runlevel.service
+	ln -sf ../systemd-update-utmp-runlevel.service ${D}${systemd_unitdir}/system/reboot.target.wants/systemd-update-utmp-runlevel.service
+	ln -sf ../systemd-update-utmp-runlevel.service ${D}${systemd_unitdir}/system/rescue.target.wants/systemd-update-utmp-runlevel.service
+
+	# Enable journal to forward message to syslog daemon
+	sed -i -e 's/.*ForwardToSyslog.*/ForwardToSyslog=yes/' ${D}${sysconfdir}/systemd/journald.conf
+	# this file is needed to exist if networkd is disabled but timesyncd is still in use since timesyncd checks it
+	# for existence else it fails
+	if [ -s ${D}${libdir}/tmpfiles.d/systemd.conf ]; then
+		${@bb.utils.contains('PACKAGECONFIG', 'networkd', ':', 'sed -i -e "\$ad /run/systemd/netif/links 0755 root root -" ${D}${libdir}/tmpfiles.d/systemd.conf', d)}
+	fi
+}
+
+do_install_ptest () {
+       install -d ${D}${PTEST_PATH}/test
+       cp -rf ${S}/test/* ${D}${PTEST_PATH}/test
+       install -m 0755  ${B}/test-udev ${D}${PTEST_PATH}/
+       install -d ${D}${PTEST_PATH}/build-aux
+       cp ${S}/build-aux/test-driver ${D}${PTEST_PATH}/build-aux/
+       cp -rf ${B}/rules ${D}${PTEST_PATH}/
+       # This directory needs to be there for udev-test.pl to work.
+       install -d ${D}${libdir}/udev/rules.d
+       cp ${B}/Makefile ${D}${PTEST_PATH}/
+       cp ${S}/test/sys.tar.xz ${D}${PTEST_PATH}/test
+       sed -i 's/"tree"/"ls"/' ${D}${PTEST_PATH}/test/udev-test.pl
+       sed -i 's#${S}#${PTEST_PATH}#g' ${D}${PTEST_PATH}/Makefile
+       sed -i 's#${B}#${PTEST_PATH}#g' ${D}${PTEST_PATH}/Makefile
+}
+
+python populate_packages_prepend (){
+    systemdlibdir = d.getVar("rootlibdir", True)
+    do_split_packages(d, systemdlibdir, '^lib(.*)\.so\.*', 'lib%s', 'Systemd %s library', extra_depends='', allow_links=True)
+}
+PACKAGES_DYNAMIC += "^lib(udev|systemd).*"
+
+PACKAGES =+ "${PN}-gui ${PN}-vconsole-setup ${PN}-initramfs ${PN}-analyze ${PN}-kernel-install \
+             ${PN}-rpm-macros ${PN}-binfmt ${PN}-pam ${PN}-zsh ${PN}-xorg-xinitrc"
+
+SYSTEMD_PACKAGES = "${PN}-binfmt"
+SYSTEMD_SERVICE_${PN}-binfmt = "systemd-binfmt.service"
+
+USERADD_PACKAGES = "${PN}"
+USERADD_PARAM_${PN} += "--system systemd-journal-gateway; --system systemd-timesync"
+GROUPADD_PARAM_${PN} = "-r lock; -r systemd-journal"
+
+FILES_${PN}-analyze = "${bindir}/systemd-analyze"
+
+FILES_${PN}-initramfs = "/init"
+RDEPENDS_${PN}-initramfs = "${PN}"
+
+RDEPENDS_${PN}-ptest += "perl python bash"
+FILES_${PN}-ptest += "${libdir}/udev/rules.d"
+
+FILES_${PN}-dbg += "${libdir}/systemd/ptest/.debug"
+
+FILES_${PN}-gui = "${bindir}/systemadm"
+
+FILES_${PN}-vconsole-setup = "${rootlibexecdir}/systemd/systemd-vconsole-setup \
+                              ${systemd_unitdir}/system/systemd-vconsole-setup.service \
+                              ${systemd_unitdir}/system/sysinit.target.wants/systemd-vconsole-setup.service"
+
+RDEPENDS_${PN}-kernel-install += "bash"
+FILES_${PN}-kernel-install = "${bindir}/kernel-install \
+                              ${sysconfdir}/kernel/ \
+                              ${exec_prefix}/lib/kernel \
+                             "
+FILES_${PN}-rpm-macros = "${exec_prefix}/lib/rpm \
+                         "
+
+FILES_${PN}-xorg-xinitrc = "${sysconfdir}/X11/xinit/xinitrc.d/*"
+
+FILES_${PN}-zsh = "${datadir}/zsh/site-functions"
+
+FILES_${PN}-binfmt = "${sysconfdir}/binfmt.d/ \
+                      ${exec_prefix}/lib/binfmt.d \
+                      ${rootlibexecdir}/systemd/systemd-binfmt \
+                      ${systemd_unitdir}/system/proc-sys-fs-binfmt_misc.* \
+                      ${systemd_unitdir}/system/systemd-binfmt.service"
+RRECOMMENDS_${PN}-binfmt = "kernel-module-binfmt-misc"
+
+RRECOMMENDS_${PN}-vconsole-setup = "kbd kbd-consolefonts kbd-keymaps"
+
+CONFFILES_${PN} = "${sysconfdir}/systemd/journald.conf \
+                ${sysconfdir}/systemd/logind.conf \
+                ${sysconfdir}/systemd/system.conf \
+                ${sysconfdir}/systemd/user.conf"
+
+FILES_${PN} = " ${base_bindir}/* \
+                ${datadir}/bash-completion \
+                ${datadir}/dbus-1/services \
+                ${datadir}/dbus-1/system-services \
+                ${datadir}/polkit-1 \
+                ${datadir}/${BPN} \
+                ${datadir}/factory \
+                ${sysconfdir}/bash_completion.d/ \
+                ${sysconfdir}/dbus-1/ \
+                ${sysconfdir}/machine-id \
+                ${sysconfdir}/modules-load.d/ \
+                ${sysconfdir}/pam.d/ \
+                ${sysconfdir}/sysctl.d/ \
+                ${sysconfdir}/systemd/ \
+                ${sysconfdir}/tmpfiles.d/ \
+                ${sysconfdir}/xdg/ \
+                ${sysconfdir}/init.d/README \
+                ${rootlibexecdir}/systemd/* \
+                ${systemd_unitdir}/* \
+                ${base_libdir}/security/*.so \
+                ${libdir}/libnss_* \
+                /cgroup \
+                ${bindir}/systemd* \
+                ${bindir}/busctl \
+                ${bindir}/localectl \
+                ${bindir}/hostnamectl \
+                ${bindir}/timedatectl \
+                ${bindir}/bootctl \
+                ${bindir}/kernel-install \
+                ${exec_prefix}/lib/tmpfiles.d/*.conf \
+                ${exec_prefix}/lib/systemd \
+                ${exec_prefix}/lib/modules-load.d \
+                ${exec_prefix}/lib/sysctl.d \
+                ${exec_prefix}/lib/sysusers.d \
+                ${localstatedir} \
+                ${nonarch_base_libdir}/udev/rules.d/70-uaccess.rules \
+                ${nonarch_base_libdir}/udev/rules.d/71-seat.rules \
+                ${nonarch_base_libdir}/udev/rules.d/73-seat-late.rules \
+                ${nonarch_base_libdir}/udev/rules.d/99-systemd.rules \
+               "
+
+FILES_${PN}-dbg += "${rootlibdir}/.debug ${systemd_unitdir}/.debug ${systemd_unitdir}/*/.debug ${base_libdir}/security/.debug/"
+FILES_${PN}-dev += "${base_libdir}/security/*.la ${datadir}/dbus-1/interfaces/ ${sysconfdir}/rpm/macros.systemd"
+
+RDEPENDS_${PN} += "kmod dbus util-linux-mount udev (= ${EXTENDPKGV})"
+RDEPENDS_${PN} += "volatile-binds"
+
+RRECOMMENDS_${PN} += "systemd-serialgetty systemd-vconsole-setup \
+                      systemd-compat-units udev-hwdb \
+                      util-linux-agetty  util-linux-fsck e2fsprogs-e2fsck \
+                      kernel-module-autofs4 kernel-module-unix kernel-module-ipv6 \
+                      os-release \
+"
+
+PACKAGES =+ "udev-dbg udev udev-hwdb"
+
+FILES_udev-dbg += "${nonarch_base_libdir}/udev/.debug"
+
+RPROVIDES_udev = "hotplug"
+
+RDEPENDS_udev-hwdb += "udev"
+
+FILES_udev += "${base_sbindir}/udevd \
+               ${rootlibexecdir}/systemd/systemd-udevd \
+               ${rootlibexecdir}/udev/accelerometer \
+               ${rootlibexecdir}/udev/ata_id \
+               ${rootlibexecdir}/udev/cdrom_id \
+               ${rootlibexecdir}/udev/collect \
+               ${rootlibexecdir}/udev/findkeyboards \
+               ${rootlibexecdir}/udev/keyboard-force-release.sh \
+               ${rootlibexecdir}/udev/keymap \
+               ${rootlibexecdir}/udev/mtd_probe \
+               ${rootlibexecdir}/udev/scsi_id \
+               ${rootlibexecdir}/udev/v4l_id \
+               ${rootlibexecdir}/udev/keymaps \
+               ${rootlibexecdir}/udev/rules.d/*.rules \
+               ${sysconfdir}/udev \
+               ${sysconfdir}/init.d/systemd-udevd \
+               ${systemd_unitdir}/system/*udev* \
+               ${systemd_unitdir}/system/*.wants/*udev* \
+               ${base_bindir}/udevadm \
+               ${datadir}/bash-completion/completions/udevadm \
+              "
+
+FILES_udev-hwdb = "${rootlibexecdir}/udev/hwdb.d"
+
+INITSCRIPT_PACKAGES = "udev"
+INITSCRIPT_NAME_udev = "systemd-udevd"
+INITSCRIPT_PARAMS_udev = "start 03 S ."
+
+python __anonymous() {
+    if not bb.utils.contains('DISTRO_FEATURES', 'sysvinit', True, False, d):
+        d.setVar("INHIBIT_UPDATERCD_BBCLASS", "1")
+}
+
+# TODO:
+# u-a for runlevel and telinit
+
+ALTERNATIVE_${PN} = "init halt reboot shutdown poweroff runlevel"
+
+ALTERNATIVE_TARGET[init] = "${rootlibexecdir}/systemd/systemd"
+ALTERNATIVE_LINK_NAME[init] = "${base_sbindir}/init"
+ALTERNATIVE_PRIORITY[init] ?= "300"
+
+ALTERNATIVE_TARGET[halt] = "${base_bindir}/systemctl"
+ALTERNATIVE_LINK_NAME[halt] = "${base_sbindir}/halt"
+ALTERNATIVE_PRIORITY[halt] ?= "300"
+
+ALTERNATIVE_TARGET[reboot] = "${base_bindir}/systemctl"
+ALTERNATIVE_LINK_NAME[reboot] = "${base_sbindir}/reboot"
+ALTERNATIVE_PRIORITY[reboot] ?= "300"
+
+ALTERNATIVE_TARGET[shutdown] = "${base_bindir}/systemctl"
+ALTERNATIVE_LINK_NAME[shutdown] = "${base_sbindir}/shutdown"
+ALTERNATIVE_PRIORITY[shutdown] ?= "300"
+
+ALTERNATIVE_TARGET[poweroff] = "${base_bindir}/systemctl"
+ALTERNATIVE_LINK_NAME[poweroff] = "${base_sbindir}/poweroff"
+ALTERNATIVE_PRIORITY[poweroff] ?= "300"
+
+ALTERNATIVE_TARGET[runlevel] = "${base_bindir}/systemctl"
+ALTERNATIVE_LINK_NAME[runlevel] = "${base_sbindir}/runlevel"
+ALTERNATIVE_PRIORITY[runlevel] ?= "300"
+
+pkg_postinst_udev-hwdb () {
+	if test -n "$D"; then
+		${@qemu_run_binary(d, '$D', '${base_bindir}/udevadm')} hwdb --update \
+			--root $D
+	else
+		udevadm hwdb --update
+	fi
+}
+
+pkg_prerm_udev-hwdb () {
+	if test -n "$D"; then
+		exit 1
+	fi
+
+	rm -f ${sysconfdir}/udev/hwdb.bin
+}
+
+# As this recipe builds udev, respect systemd being in DISTRO_FEATURES so
+# that we don't build both udev and systemd in world builds.
+python () {
+    if not bb.utils.contains ('DISTRO_FEATURES', 'systemd', True, False, d):
+        raise bb.parse.SkipPackage("'systemd' not in DISTRO_FEATURES")
+}