app-admin/mkosi: add mkosi

... in anticipation of the PR for gentoo support [upstream-pr] getting closer to being
merged.

[upstream-pr] https://github.com/systemd/mkosi/pull/717

Signed-off-by: Paymon MARANDI <darwinskernel@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/22509
Signed-off-by: Florian Schmaus <flow@gentoo.org>

app-admin/mkosi/Manifest

@@ -0,0 +1 @@
+DIST mkosi-11.tar.gz 165064 BLAKE2B 19a140fa355dff946dfd46369ccdcce369d97e5ef5c8a0917f21d1f5876c302e54b1e8e509d3cfa54d72a2b4d5b1d97abe74ff2232e3a8ca84005358ed6a99fa SHA512 c07b092e38e663100cfa00ce58c2b61d306292f69429835915310f9736e11ea1431ae2667e8fca02c2a145aa4f21bd199f956d2882913474c4cee394bb15a8f2

app-admin/mkosi/metadata.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person" proxied="yes">
+		<email>darwinskernel@gmail.com</email>
+		<name>Paymon MARANDI</name>
+	</maintainer>
+	<maintainer type="project" proxied="proxy">
+		<email>proxy-maint@gentoo.org</email>
+		<name>Proxy Maintainers</name>
+	</maintainer>
+</pkgmetadata>

app-admin/mkosi/mkosi-11.ebuild

@@ -0,0 +1,27 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..10} )
+
+inherit distutils-r1 optfeature
+
+DESCRIPTION="Build Bespoke OS Images"
+HOMEPAGE="https://github.com/systemd/mkosi"
+SRC_URI="https://github.com/systemd/mkosi/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="GPL-2+"
+SLOT="0"
+KEYWORDS="~amd64"
+RDEPEND="
+	sys-apps/portage
+	sys-apps/systemd
+	dev-vcs/git
+"
+
+distutils_enable_tests pytest
+
+pkg_postinst() {
+	optfeature "For debian support: " dev-util/debootstrap
+}