Added ArchLinux config for mkosi (#4274)

mkosi.arch

@@ -0,0 +1,67 @@
+# This file is part of systemd.
+#
+# Copyright 2016 Zeal Jagannatha
+#
+# systemd is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# systemd is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with systemd; If not, see <http://www.gnu.org/licenses/>.
+
+# This is a settings file for OS image generation using mkosi (https://github.com/systemd/mkosi).
+# Simply invoke "mkosi" in the project directory to build an OS image.
+
+[Distribution]
+Distribution=arch
+
+[Output]
+Format=raw_btrfs
+Bootable=yes
+
+[Partitions]
+RootSize=2G
+
+[Packages]
+Cache=/var/cache/pacman/pkg/
+BuildPackages=
+        acl
+        autoconf
+        automake
+        bzip2
+        cryptsetup
+        curl
+        dbus
+        docbook-xsl
+        elfutils
+        gcc
+        git
+        gnu-efi-libs
+        gnutls
+        gperf
+        intltool
+        iptables
+        kmod
+        libcap
+        libgcrypt
+        libidn
+        libmicrohttpd
+        libseccomp
+        libtool
+        libutil-linux
+        libxkbcommon
+        libxslt
+        lz4
+        make
+        pam
+        pkgconfig
+        python
+        python-lxml
+        qrencode
+        xz