Since v3.0, LXC has been shipping old style templates separately.
Package-Manager: Portage-2.3.40, Repoman-2.3.9
--- /dev/null
+DIST lxc-templates-3.0.1.tar.gz 256074 BLAKE2B 8a5dab2d69fbc29e0246a0853690726c07d24e0fe6d4e761d8ec8b4559cdf285a82e17c8f4d2a6bf2355896c667000d4341511b3c5f1805a55849b4812eb7efe SHA512 cae47b670654dc6c143827d196f0477c5354cb6d81ae4028192622fb73912e8bb3b62a0a68786e9212885bb52b593c6e742cfbfefb70ec33260d599e5d5c8290
--- /dev/null
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -10,9 +10,5 @@ EXTRA_DIST = \
+ CONTRIBUTING \
+ MAINTAINERS
+
+-install-data-local:
+- $(MKDIR_P) $(DESTDIR)$(LXCPATH)
+- $(MKDIR_P) $(DESTDIR)$(localstatedir)/cache/lxc
+-
+ ChangeLog::
+ @touch ChangeLog
--- /dev/null
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit autotools
+
+DESCRIPTION="Old style template scripts for LXC"
+HOMEPAGE="https://linuxcontainers.org/"
+SRC_URI="https://linuxcontainers.org/downloads/lxc/${P}.tar.gz"
+
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~x86"
+
+LICENSE="LGPL-3"
+SLOT="0"
+
+RDEPEND="
+ >=app-emulation/lxc-3.0"
+
+DEPEND="${RDEPEND}"
+
+PATCHES=( "${FILESDIR}/${P}-no-cache-dir.patch" )
+DOCS=()
+
+src_prepare() {
+ default
+ eautoreconf
+}
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+ <maintainer type="person">
+ <email>vdupras@gentoo.org</email>
+ </maintainer>
+ <maintainer type="project">
+ <email>virtualization@gentoo.org</email>
+ <name>Gentoo Virtualization Project</name>
+ </maintainer>
+ <upstream>
+ <remote-id type="github">lxc/lxc-templates</remote-id>
+ </upstream>
+</pkgmetadata>