dev-python/cython: Bump to 0.29.6

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

dev-python/cython/Manifest

@@ -3,3 +3,4 @@ DIST Cython-0.26.1.tar.gz 1725133 BLAKE2B b2c0433e8154ad76d921677608cae42a793326
 DIST Cython-0.28.4.tar.gz 1880943 BLAKE2B a97314147294c95fa0bd6d3fa1a1315d81f8abb46a1f2196009c1ef6f0dd7f47f81a7b31ab81d1fd00e8de37878a18a22d225055181ee74ffe4cc8105d84cd75 SHA512 67d2da2d776fc02193cfe98c8942e93905ec5e30bf4e0f9d5c965d930a034936d4c29c8248fccefff5db6d4dee054ec854994bea63fa3f64ff65df7550997c29
 DIST Cython-0.29.4.tar.gz 2044382 BLAKE2B b36d27706a3270805f66190a4cf2735eaf20b1b932365b324a433c0e58e63e860ce1500333233c3539ae697886ac0adc361a2c158d5d064a3ea05843debc3f26 SHA512 8f115e36975aaf64eda4df8b0a85378d0c80b3292dbd162be826b939def03bdc9f3eb937676e2367003c2944b570d97f50d7880becfdb2fdc5144077b4a722dc
 DIST Cython-0.29.5.tar.gz 2045488 BLAKE2B ca809728115865b7d28100943b358d8f5236382e5ae5a43d557620c3bd856407a9f52b756fc910564a6c041d64b1439d60776c90c6970614f74ee2d03f94665f SHA512 4bbf54b248b9a08b9118d751a6bb5dbb81ae7a8238c8a3124d94bf7be67f15b68820e6ce5470903fb5d5ff5c3c213e1580f1c57a8cda33b356263f9ab46e8851
+DIST Cython-0.29.6.tar.gz 2047021 BLAKE2B 32fe6697ba407a75dad79f08fd2e33ba11b083c65f69e09cd269c8a9f445d183a8cf36794fc8b2abb5e98b9626f0c62a099367359634833f36273c7681835572 SHA512 bb8095b438a7d2567b8b831628fbb32c02299c866e41113da62fb5a5d4982dc0df947a9f723a82c52086806435d8f3518e78a803166149d476f81e042a12494e

dev-python/cython/cython-0.29.6.ebuild

@@ -0,0 +1,86 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 python3_{4,5,6,7} )
+PYTHON_REQ_USE="threads(+)"
+
+inherit distutils-r1 toolchain-funcs elisp-common
+
+MY_PN="Cython"
+MY_P="${MY_PN}-${PV/_/}"
+
+DESCRIPTION="A Python to C compiler"
+HOMEPAGE="https://cython.org https://pypi.org/project/Cython/"
+SRC_URI="mirror://pypi/${MY_PN:0:1}/${MY_PN}/${MY_P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x64-cygwin ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~x64-solaris ~x86-solaris"
+IUSE="doc emacs test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	emacs? ( virtual/emacs )
+"
+DEPEND="${RDEPEND}
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	doc? ( dev-python/sphinx[${PYTHON_USEDEP}] )
+	test? ( dev-python/numpy[${PYTHON_USEDEP}] )"
+
+SITEFILE=50cython-gentoo.el
+S="${WORKDIR}/${MY_PN}-${PV%_*}"
+
+python_prepare_all() {
+	# tests behavior that is illegal in Python 3.7+
+	# https://github.com/cython/cython/issues/2454
+	sed -i -e '/with_outer_raising/,/return/d' tests/run/generators_py.py || die
+
+	distutils-r1_python_prepare_all
+}
+
+python_compile() {
+	if ! python_is_python3; then
+		local CFLAGS="${CFLAGS} -fno-strict-aliasing"
+		local CXXFLAGS="${CXXFLAGS} -fno-strict-aliasing"
+	fi
+
+	# Python gets confused when it is in sys.path before build.
+	local -x PYTHONPATH=
+
+	distutils-r1_python_compile
+}
+
+python_compile_all() {
+	use emacs && elisp-compile Tools/cython-mode.el
+
+	use doc && emake -C docs html
+}
+
+python_test() {
+	tc-export CC
+	# https://github.com/cython/cython/issues/1911
+	local -x CFLAGS="${CFLAGS} -fno-strict-overflow"
+	"${PYTHON}" runtests.py -vv --work-dir "${BUILD_DIR}"/tests \
+		|| die "Tests fail with ${EPYTHON}"
+}
+
+python_install_all() {
+	local DOCS=( CHANGES.rst README.rst ToDo.txt USAGE.txt )
+	use doc && local HTML_DOCS=( docs/build/html/. )
+	distutils-r1_python_install_all
+
+	if use emacs; then
+		elisp-install ${PN} Tools/cython-mode.*
+		elisp-site-file-install "${FILESDIR}/${SITEFILE}"
+	fi
+}
+
+pkg_postinst() {
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}