sys-libs/timezone-data: Apply Flatcar patches

Recreate the old posix symlink for compatibility, and drop all the
pkg functions that maintain /etc/localtime since we default to UTC.

Signed-off-by: Sayan Chowdhury <schowdhury@microsoft.com>

sdk_container/src/third_party/coreos-overlay/sys-libs/timezone-data/timezone-data-2021a-r1.ebuild

@@ -107,90 +107,7 @@ src_install() {
 	# Delete man pages installed by man-pages package.
 	rm "${ED}"/usr/share/man/man5/tzfile.5* "${ED}"/usr/share/man/man8/{tzselect,zdump,zic}.8 || die
 	dodoc CONTRIBUTING README NEWS *.html
-}
+
-
+	# install the symlink by hand to not break existing timezones
-get_TIMEZONE() {
+	dosym . /usr/share/zoneinfo/posix
-	local tz src="${EROOT}/etc/timezone"
-	if [[ -e ${src} ]] ; then
-		tz=$(sed -e 's:#.*::' -e 's:[[:space:]]*::g' -e '/^$/d' "${src}")
-	else
-		tz="FOOKABLOIE"
-	fi
-	[[ -z ${tz} ]] && return 1 || echo "${tz}"
-}
-
-pkg_preinst() {
-	local tz=$(get_TIMEZONE)
-	if [[ ${tz} == right/* || ${tz} == posix/* ]] ; then
-		eerror "The right & posix subdirs are no longer installed as subdirs -- they have been"
-		eerror "relocated to match upstream paths as sibling paths.  Further, posix/xxx is the"
-		eerror "same as xxx, so you should simply drop the posix/ prefix.  You also should not"
-		eerror "be using right/xxx for the system timezone as it breaks programs."
-		die "Please fix your timezone setting"
-	fi
-
-	# Trim the symlink by hand to avoid portage's automatic protection checks.
-	rm -f "${EROOT}"/usr/share/zoneinfo/posix
-
-	if has_version "<=${CATEGORY}/${PN}-2015c" ; then
-		elog "Support for accessing posix/ and right/ directly has been dropped to match"
-		elog "upstream.  There is no need to set TZ=posix/xxx as it is the same as TZ=xxx."
-		elog "For TZ=right/, you can use TZ=../zoneinfo-leaps/xxx instead.  See this post"
-		elog "for details: https://mm.icann.org/pipermail/tz/2015-February/022024.html"
-	fi
-}
-
-configure_tz_data() {
-	# make sure the /etc/localtime file does not get stale #127899
-	local tz src="${EROOT}/etc/timezone" etc_lt="${EROOT}/etc/localtime"
-
-	# If it's a symlink, assume the user knows what they're doing and
-	# they're managing it themselves. #511474
-	if [[ -L "${etc_lt}" ]] ; then
-		einfo "Assuming your ${etc_lt} symlink is what you want; skipping update."
-		return 0
-	fi
-
-	if ! tz=$(get_TIMEZONE) ; then
-		einfo "Assuming your empty ${src} file is what you want; skipping update."
-		return 0
-	fi
-
-	if [[ "${tz}" == "FOOKABLOIE" ]] ; then
-		einfo "You do not have a timezone set in ${src}; skipping update."
-		return 0
-	fi
-
-	local tzpath="${EROOT}/usr/share/zoneinfo/${tz}"
-
-	if [[ ! -e ${tzpath} ]]; then
-		ewarn "The timezone specified in ${src} is not valid."
-		return 1
-	fi
-
-	if [[ -f ${etc_lt} ]]; then
-		# If a regular file already exists, copy over it.
-		ewarn "Found a regular file at ${etc_lt}."
-		ewarn "Some software may expect a symlink instead."
-		ewarn "You may convert it to a symlink by removing the file and running:"
-		ewarn "  emerge --config sys-libs/timezone-data"
-		einfo "Copying ${tzpath} to ${etc_lt}."
-		cp -f "${tzpath}" "${etc_lt}"
-	else
-		# Otherwise, create a symlink and remove the timezone file.
-		tzpath="../usr/share/zoneinfo/${tz}"
-		einfo "Linking ${tzpath} at ${etc_lt}."
-		if ln -snf "${tzpath}" "${etc_lt}"; then
-			einfo "Removing ${src}."
-			rm -f "${src}"
-		fi
-	fi
-}
-
-pkg_config() {
-	configure_tz_data
-}
-
-pkg_postinst() {
-	configure_tz_data
 }