dev-python/slimit: revbump to silence warning on module import

Closes: https://bugs.gentoo.org/660510
Closes: https://github.com/gentoo/gentoo/pull/9068
Package-Manager: Portage-2.3.40, Repoman-2.3.9

dev-python/slimit/slimit-0.8.1-r1.ebuild

@@ -15,7 +15,7 @@ SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE="test"
 
-RDEPEND="dev-python/ply[${PYTHON_USEDEP}]
+RDEPEND="dev-python/ply:=[${PYTHON_USEDEP}]
 	dev-python/setuptools[${PYTHON_USEDEP}]"
 DEPEND="${RDEPEND}
 	test? (
@@ -25,6 +25,17 @@ DEPEND="${RDEPEND}
 
 PATCHES=( "${FILESDIR}/${P}-fix-python3.patch" )
 
+python_compile() {
+	distutils-r1_python_compile
+
+	rm "${BUILD_DIR}"/lib/slimit/*tab.py || die
+
+	# Regenerate yacctab.py and lextab.py files to avoid warnings whenever
+	# the module is imported. See https://github.com/rspivak/slimit/issues/97
+	# for details
+	"${EPYTHON}" -B -c 'import slimit;slimit.minify("")' || die
+}
+
 python_test() {
 	esetup.py pytest --addopts "${BUILD_DIR}" || die "Testing failed with ${EPYTHON}"
 }