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diff --git a/sys-cluster/charliecloud/charliecloud-0.16.ebuild b/sys-cluster/charliecloud/charliecloud-0.16.ebuild
new file mode 100644
index 000000000000..54113d039cd4
--- /dev/null
+++ b/sys-cluster/charliecloud/charliecloud-0.16.ebuild
@@ -0,0 +1,77 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{6,7} )
+
+inherit autotools eutils python-single-r1
+
+if [[ ${PV} == "9999" ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/hpc/${PN}.git"
+	S="${WORKDIR}/${P}"
+else
+	SRC_URI="https://github.com/hpc/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64 ~x86 ~x86-linux"
+fi
+
+DESCRIPTION="Lightweight user-defined software stacks for high-performance computing"
+HOMEPAGE="https://hpc.github.io/charliecloud/"
+
+SLOT="0"
+LICENSE="Apache-2.0"
+IUSE="ch-grow doc examples +pv +squashfs squashfuse"
+
+# Extensive test suite exists, but downloads container images
+# directly and via Docker and installs packages inside using apt/yum.
+# Additionally, clashes with portage namespacing and sandbox.
+RESTRICT="test"
+
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+RDEPEND="${PYTHON_DEPS}
+	pv? ( sys-apps/pv )
+	squashfs? ( sys-fs/squashfs-tools )
+	squashfuse? ( sys-fs/squashfuse )"
+DEPEND="
+	ch-grow? (
+		$(python_gen_cond_dep '
+			dev-python/lark-parser[${PYTHON_MULTI_USEDEP}]
+			dev-python/requests[${PYTHON_MULTI_USEDEP}]
+		')
+	)
+	doc? (
+		$(python_gen_cond_dep '
+			dev-python/sphinx[${PYTHON_MULTI_USEDEP}]
+			dev-python/sphinx_rtd_theme[${PYTHON_MULTI_USEDEP}]
+		')
+		net-misc/rsync
+	)"
+
+src_prepare() {
+	default
+	eautoreconf
+}
+
+src_configure() {
+	local econf_args=()
+	econf_args+=(
+		$(use_enable doc html)
+		$(use_enable ch-grow)
+		# Libdir is used as a libexec-style destination.
+		--libdir="${EPREFIX}"/usr/lib
+		# Attempts to call python-exec directly otherwise.
+		--with-sphinx-python=${PYTHON}
+	)
+	econf "${econf_args[@]}"
+}
+
+pkg_postinst() {
+	elog "Various builders are supported, as alternative "
+	elog "to the internal ch-grow. The following packages "
+	elog "can be installed to get the corresponding support."
+
+	optfeature "Building with Buildah" app-emulation/buildah
+	optfeature "Building with Docker" app-emulation/docker
+}