dev-python/pywayland: Replace virtual/python-cffi dependency + QA

Replace deprecated virtual/python-cffi and add missing `|| die`
after `rm`.

Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-python/pywayland/pywayland-0.4.15.ebuild

@@ -5,7 +5,7 @@ EAPI=8
 
 DISTUTILS_EXT=1
 DISTUTILS_USE_PEP517=setuptools
-PYTHON_COMPAT=( python3_{9..11} pypy3 )
+PYTHON_COMPAT=( python3_{10..11} pypy3 )
 
 inherit distutils-r1 xdg-utils
 
@@ -26,12 +26,17 @@ KEYWORDS="amd64 ~riscv ~x86"
 
 RDEPEND="
 	dev-libs/wayland
-	virtual/python-cffi[${PYTHON_USEDEP}]
+	$(python_gen_cond_dep '
+		dev-python/cffi[${PYTHON_USEDEP}]
+	' 'python*')
 "
-DEPEND="${RDEPEND}
+DEPEND="
+	${RDEPEND}
 	dev-libs/wayland-protocols
 "
-BDEPEND="dev-util/wayland-scanner"
+BDEPEND="
+	dev-util/wayland-scanner
+"
 
 distutils_enable_tests pytest
 
@@ -43,7 +48,7 @@ python_prepare_all() {
 
 python_test() {
 	# No die deliberately as sometimes it doesn't exist
-	rm -r pywayland
+	rm -rf pywayland || die
 
 	epytest
 }