sys-apps/xdg-desktop-portal: Add USE screencast

Bug: https://bugs.gentoo.org/686336
Package-Manager: Portage-2.3.68, Repoman-2.3.16
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

sys-apps/xdg-desktop-portal/metadata.xml

@@ -5,4 +5,7 @@
 		<email>kde@gentoo.org</email>
 		<name>Gentoo KDE Project</name>
 	</maintainer>
+	<use>
+		<flag name="screencast">Enable screencast portal using <pkg>media-video/pipewire</pkg></flag>
+	</use>
 </pkgmetadata>

sys-apps/xdg-desktop-portal/xdg-desktop-portal-1.4.2.ebuild

@@ -12,7 +12,7 @@ SRC_URI="https://github.com/flatpak/${PN}/releases/download/${PV}/${P}.tar.xz"
 LICENSE="LGPL-2.1"
 SLOT="0"
 KEYWORDS="~amd64 ~arm ~arm64 ~x86"
-IUSE="doc geolocation"
+IUSE="doc geolocation screencast"
 
 BDEPEND="
 	dev-util/gdbus-codegen
@@ -27,15 +27,16 @@ DEPEND="
 	dev-libs/glib:2[dbus]
 	sys-fs/fuse:0
 	geolocation? ( >=app-misc/geoclue-2.5.3:2.0 )
+	screencast? ( media-video/pipewire )
 "
 RDEPEND="${DEPEND}"
 
 src_configure() {
 	local myeconfargs=(
-		--disable-pipewire
 		--with-systemduserunitdir="$(systemd_get_userunitdir)"
 		$(use_enable doc docbook-docs)
 		$(use_enable geolocation geoclue)
+		$(use_enable screencast pipewire)
 	)
 	econf "${myeconfargs[@]}"
 }