dev-python/lxml: version bump to 4.2.2

Closes: https://bugs.gentoo.org/658680

dev-python/lxml/Manifest

@@ -1,3 +1,4 @@
 DIST lxml-3.8.0.tar.gz 3795205 BLAKE2B 39f3edc7efe48bd569b636de89cfcd8f7e4e88e025fd5c21164e35edf110546112844a4ddb6cb1842649fb165de3b3880b0fdb7a23522a891b35390adf64c95b SHA512 08f6f352e22ed2bc199a5f34a1c6b5f7b41ec282dc0026c9f16a06466c27e39e8eb18608ba4493636170eeac4b0194f7050445e1cc9bd0a4628573c404593088
 DIST lxml-4.1.1.tar.gz 2380804 BLAKE2B 4d3c4ef0472c7af7bb4185142a8274b596dd55a908d41f5295d0a78031a7efb3aef8893ca739f8db0675e44d4b0c346746a2758d31a54825c06a153203599ab9 SHA512 9542e5206f9b2f9e072c52ef8e6cf44d1aaae8ae3e7ca7e820c1fac12e716503308ccb3cebc52155b4c93799f3ebca247781fc491524d004378bd26f5cddb9d1
 DIST lxml-4.2.0.tar.gz 4282112 BLAKE2B 5dd68d984097253fac4c35d59e7b687fa1bc0699946accb66687b94e0b3d807c7c555795486828307ccbadd87aa989b6bba2d2fc71cec27e8b8e52f2762c5548 SHA512 89c7dd5d36e8816008b22b25bb02275a008fcfe26f6fdeff139ac8394bd773035bf423b9d7c4233f19985e5a8c12f936b71096c55e28957e97da0810d88de8d3
+DIST lxml-4.2.2.tar.gz 4417798 BLAKE2B 9344e0d261d2d40d43e67d4f162ce7da466c924dc1ad69d7eca602c14d789c6531747079cc92058e28f320c8695a64333b5044d37fecb8c713b0feac97ecef90 SHA512 4723c70edfa97069cb476d30e4f9c97f77c560302bdb547b6c4b0e7eb8610dc28a5e47c99bba6d780fd7b1510c0daa5cfb2da40542aab4415ea59c2a378a6b71

dev-python/lxml/lxml-4.2.2.ebuild

@@ -0,0 +1,73 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+PYTHON_COMPAT=( python2_7 python3_{4,5,6} pypy )
+
+inherit distutils-r1 eutils toolchain-funcs
+
+DESCRIPTION="A Pythonic binding for the libxml2 and libxslt libraries"
+HOMEPAGE="http://lxml.de/ https://pypi.org/project/lxml/ https://github.com/lxml/lxml"
+SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
+
+LICENSE="BSD ElementTree GPL-2 PSF-2"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x64-cygwin ~amd64-fbsd ~x86-fbsd ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~sparc-solaris ~x64-solaris ~x86-solaris"
+IUSE="doc examples +threads test"
+
+# Note: lib{xml2,xslt} are used as C libraries, not Python modules.
+RDEPEND="
+	>=dev-libs/libxml2-2.9.5
+	>=dev-libs/libxslt-1.1.28"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	test? ( dev-python/cssselect[${PYTHON_USEDEP}] )
+	"
+
+DISTUTILS_IN_SOURCE_BUILD=1
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.5.0-cross-compile.patch
+)
+
+python_prepare_all() {
+	# avoid replacing PYTHONPATH in tests.
+	sed -i '/sys\.path/d' test.py || die
+
+	distutils-r1_python_prepare_all
+}
+
+python_compile() {
+	if ! python_is_python3; then
+		local -x CFLAGS="${CFLAGS} -fno-strict-aliasing"
+	fi
+	tc-export PKG_CONFIG
+	distutils-r1_python_compile
+}
+
+python_test() {
+	cp -r -l src/lxml/tests "${BUILD_DIR}"/lib/lxml/ || die
+	cp -r -l src/lxml/html/tests "${BUILD_DIR}"/lib/lxml/html/ || die
+	ln -s "${S}"/doc "${BUILD_DIR}"/ || die
+
+	"${EPYTHON}" test.py -vv --all-levels -p || die "Test ${test} fails with ${EPYTHON}"
+}
+
+python_install_all() {
+	if use doc; then
+		local DOCS=( README.rst *.txt doc/*.txt )
+		local HTML_DOCS=( doc/html/. )
+	fi
+	if use examples; then
+		dodoc -r samples
+	fi
+
+	distutils-r1_python_install_all
+}
+
+pkg_postinst() {
+	optfeature "Support for BeautifulSoup3 as a parser backend" dev-python/beautifulsoup
+	optfeature "Translates CSS selectors to XPath 1.0 expressions" dev-python/cssselect
+}