dev-python/pyclip: sync live ebuild

Signed-off-by: Lucio Sauer <watermanpaint@posteo.net>

dev-python/pyclip/pyclip-9999.ebuild

@@ -21,7 +21,8 @@ DESCRIPTION="Python clipboard module"
 HOMEPAGE="https://pypi.org/project/pyclip/"
 LICENSE="Apache-2.0"
 SLOT="0"
-IUSE="wayland X"
+IUSE="wayland +X"
+# Needs a working xorg/wayland setup
 RESTRICT="test"
 DOCS="${S}/docs/README.md"
 REQUIRED_USE="|| ( wayland X )"
@@ -30,3 +31,21 @@ RDEPEND="
 	wayland? ( gui-apps/wl-clipboard )
 	X? ( x11-misc/xclip )
 "
+
+src_prepare() {
+	# Clipboard detection should respect USE flags
+	if use wayland && ! use X; then
+		sed -ie "/linux':/s/elif .*/elif False:/" pyclip/util.py || die
+	elif ! use wayland && use X; then
+		sed -ie "/WAYLAND/s/elif .*/elif False:/" pyclip/util.py || die
+	fi
+	distutils-r1_src_prepare
+}
+
+pkg_postinst() {
+	if use wayland && use X; then
+		elog "If you wish to use the xclip backend over the wl-clipboard backend,"
+		elog "unset the WAYLAND_DISPLAY environment variable or consider"
+		elog "installing ${CATEGORY}/${PN}[-wayland,X] instead."
+	fi
+}