dev-python/urwid: Port to py39, fix tests

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

dev-python/urwid/urwid-2.1.0.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=7
 
-PYTHON_COMPAT=( python2_7 python3_{6,7,8} )
+PYTHON_COMPAT=( python2_7 python3_{6..9} )
 PYTHON_REQ_USE="ncurses"
 
 inherit distutils-r1
@@ -15,11 +15,18 @@ SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
 LICENSE="LGPL-2.1"
 SLOT="0"
 KEYWORDS="amd64 ~arm ~arm64 ~ia64 ~mips ppc ppc64 ~sparc x86 ~amd64-linux ~x86-linux"
-IUSE="doc examples"
+IUSE="examples"
 
 distutils_enable_sphinx docs
 distutils_enable_tests setup.py
 
+src_prepare() {
+	# optional tests broken by modern tornado versions
+	sed -e 's:import tornado:&_broken:' \
+		-i urwid/tests/test_event_loops.py || die
+	distutils-r1_src_prepare
+}
+
 python_compile() {
 	if ! python_is_python3; then
 		local CFLAGS="${CFLAGS} -fno-strict-aliasing"