dev-python/cython: Bump to 0.29.18

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

dev-python/cython/Manifest

@@ -1,2 +1,3 @@
 DIST cython-0.29.15.gh.tar.gz 2075879 BLAKE2B e6322656c819c6b09e235c32d2b520e8fe917c864047d028dd67041e70251025f14accbd76499b7b9290d0424989adf89321f251526e66a892bdc243ba80ba7f SHA512 bd0872359d31a41750353bb0d7f03c2a40aa2bf6e492148e693321cef15b02ae4f8d5f5a00efde7216f09a6ac06f2bb3ded9d00e27ad0cfc53605f3a9ef55af8
 DIST cython-0.29.17.gh.tar.gz 2080768 BLAKE2B f53f8593f4ab9ef87c8fff47a031d365a748b617b7ee41872768a6a649ca3c6a6f9a338f115881117cbb4ffe1811047ac5fdcac745d6387eee29487c9da4c297 SHA512 f722e4feb0fcd0de7b882d0ba7cd78c37b6aaa4438619607665ea269b207a482fab6ca65cf12bab54d94b5929776c973a270c0748ed35b0f88a72811bf90d4df
+DIST cython-0.29.18.gh.tar.gz 2083532 BLAKE2B 7e10a32f15542ed0d7d381223f6f20ec75d7ec39979ca58192cc0f95407cece31fb053776072b49e447ffb0ab5ad1918c6b53ad8cb277df08fabe0eab8ccf958 SHA512 5a1430345fbe42235a58fd44dd4e4ce17c68485349295af6c4e9a01a06117e18ee7700c34fb5974759f012acd5cf8400ed014ef16397539272c38881e905234a

dev-python/cython/cython-0.29.18.ebuild

@@ -0,0 +1,80 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 python3_{6,7,8} pypy3 )
+PYTHON_REQ_USE="threads(+)"
+
+inherit distutils-r1 toolchain-funcs elisp-common
+
+DESCRIPTION="A Python to C compiler"
+HOMEPAGE="https://cython.org https://pypi.org/project/Cython/
+	https://github.com/cython/cython"
+SRC_URI="https://github.com/cython/cython/archive/${PV}.tar.gz -> ${P}.gh.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~x64-solaris ~x86-solaris"
+IUSE="emacs test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	emacs? ( >=app-editors/emacs-23.1:* )
+"
+BDEPEND="${RDEPEND}
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	test? (
+		$(python_gen_cond_dep 'dev-python/numpy[${PYTHON_USEDEP}]' \
+			'python3*')
+	)"
+
+PATCHES=(
+	"${FILESDIR}/cython-0.29.14-sphinx-update.patch"
+)
+
+SITEFILE=50cython-gentoo.el
+
+distutils_enable_sphinx docs
+
+python_compile() {
+	if ! python_is_python3; then
+		local CFLAGS="${CFLAGS} -fno-strict-aliasing"
+		local CXXFLAGS="${CXXFLAGS} -fno-strict-aliasing"
+	fi
+
+	# Python gets confused when it is in sys.path before build.
+	local -x PYTHONPATH=
+
+	distutils-r1_python_compile
+}
+
+python_compile_all() {
+	use emacs && elisp-compile Tools/cython-mode.el
+}
+
+python_test() {
+	tc-export CC
+	# https://github.com/cython/cython/issues/1911
+	local -x CFLAGS="${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 )
+	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
+}