sys-apps/flatpak: New package.

Need:
 - some extra polishing
 - re-introduce kde use-flag (& port KDE xdg portal)
 - other stuff, feel free to touch it directly without my consent

I stole it (and slightly improved) from unlisted flatpak overlay,
where author has no intention to even get listed in layman overlays.

Package-Manager: Portage-2.3.99, Repoman-2.3.22
Signed-off-by: David Heidelberg <david@ixit.cz>

sys-apps/flatpak/Manifest

@@ -0,0 +1 @@
+DIST flatpak-1.6.3.tar.xz 1340936 BLAKE2B ed697161a6ea10de7910438ef19d3a27d6bc4fc6b4ab8d14a955fb0ba6299950d13b25bf356b9b3341395441d378c0d0f3000dc0dd983a922090372d8e67a30d SHA512 8527914dd728d6bc4d28fcc7740514a370aad7c49c65e6126cdc237886dc3a5cb173a7fa69d8374a7502e08b1429b69bf24ee700a7d723fc090f9661534ca7b4

sys-apps/flatpak/flatpak-1.6.3.ebuild

@@ -0,0 +1,85 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit autotools linux-info
+
+SRC_URI="https://github.com/${PN}/${PN}/releases/download/${PV}/${P}.tar.xz"
+DESCRIPTION="Application distribution framework"
+HOMEPAGE="http://flatpak.org/"
+
+LICENSE="LGPL-2.1"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="doc gnome gtk introspection policykit seccomp"
+
+# FIXME: systemd is automagic dep.
+RDEPEND="
+	acct-group/flatpak
+	acct-user/flatpak
+	>=dev-util/ostree-2019.5[gpg(+)]
+	|| ( dev-util/ostree[curl]
+		 dev-util/ostree[soup] )
+	>=net-libs/libsoup-2.4
+	>=gnome-base/dconf-0.26
+	>=dev-libs/appstream-glib-0.5.10
+	x11-libs/gdk-pixbuf:2
+	>=dev-libs/glib-2.56:2
+	>=dev-libs/libxml2-2.4
+	sys-apps/dbus
+	dev-libs/json-glib
+	x11-apps/xauth
+	>=app-arch/libarchive-2.8
+	>=app-crypt/gpgme-1.1.8
+	>=sys-fs/fuse-2.9.9:0
+	policykit? ( >=sys-auth/polkit-0.98 )
+	seccomp? ( sys-libs/libseccomp )
+"
+DEPEND="${RDEPEND}
+	>=sys-devel/gettext-0.18.2
+	dev-util/gdbus-codegen
+	introspection? ( >=dev-libs/gobject-introspection-1.40 )
+	doc? ( >=dev-util/gtk-doc-1.20
+	       dev-libs/libxslt )
+"
+
+BDEPEND="
+	>=sys-devel/automake-1.13.4
+	sys-devel/bison
+	virtual/pkgconfig
+"
+# FIXME: is there a nicer way to do this?
+PDEPEND="
+	gtk? ( >=sys-apps/xdg-desktop-portal-0.10
+	       sys-apps/xdg-desktop-portal-gtk )
+	gnome? ( >=sys-apps/xdg-desktop-portal-0.10
+		 sys-apps/xdg-desktop-portal-gtk )
+"
+
+pkg_setup() {
+	local CONFIG_CHECK="~USER_NS"
+	linux-info_pkg_setup
+}
+
+src_configure() {
+	# FIXME: the gtk-doc check doesn't seem to be working
+	# TODO: split out bubblewrap
+	# TODO: split out xdg-dbus-proxy?
+	# TODO: We do not provide libmalcontent yet.
+	local myeconfargs=(
+		--enable-sandboxed-triggers \
+		--enable-xauth \
+		--localstatedir="${EPREFIX}"/var \
+		--without-system-bubblewrap \
+		--without-system-dbus-proxy \
+		$(use_enable doc documentation) \
+		$(use_enable doc gtk-doc) \
+		$(use_enable introspection) \
+		$(use_enable policykit system-helper) \
+		$(use_enable seccomp)
+	)
+
+	econf "${myeconfargs[@]}"
+
+}

sys-apps/flatpak/metadata.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>david@ixit.cz</email>
+		<name>David Heidelberg</name>
+	</maintainer>
+</pkgmetadata>