dev-python/pygal: bump to 2.4.0; add doc, tests and examples

Also make sure Python has xml support and add setuptools to DEPEND
because pkg_resources is used.

Closes: https://bugs.gentoo.org/650062
Package-Manager: Portage-2.3.40, Repoman-2.3.9

dev-python/pygal/Manifest

@@ -1 +1,2 @@
 DIST pygal-2.1.1.tar.gz 69757 BLAKE2B d79e65c374e9d191a8e6671fd3bebfee4680c46b54ae141db74d67a08696e8bfa9ef88dcbb07ebf9e267fa5a7024b97a0c9f91f056753caf169e0518a6f49786 SHA512 79851bd6278a3a71f067ea11f273fcd0755ac0ab2ba51266b161fff1f3b49d690bc2a1b3432255da4f3cd5b9cfcff570d713d0bbfaf6f2dfe5b6f922989c72bd
+DIST pygal-2.4.0.tar.gz 4554802 BLAKE2B 9627558e734420bfb3137989d0cc1978a0a06a597d3d5d071e13653876a4bb3266f12f1a8a358076619d997998754c29ee75058356ba66da64b112a24c2cbe2a SHA512 d69fbcff3792cb0b952addc3bfbaea76628d5546482c291ef217c592a820a73a65b1eb522c5d7877e7a794d19b74636126d99a4ff280e8467ab07a95000ba823

dev-python/pygal/pygal-2.4.0.ebuild

@@ -0,0 +1,62 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+PYTHON_COMPAT=( python{2_7,3_{4,5,6}} )
+PYTHON_REQ_USE="xml(+)"
+
+inherit distutils-r1
+
+DESCRIPTION="A python SVG charts generator"
+HOMEPAGE="http://pygal.org/"
+# PyPI tarballs do not contain docs
+# https://github.com/Kozea/pygal/pull/428
+SRC_URI="https://github.com/Kozea/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="LGPL-3+"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="doc examples test"
+
+RDEPEND="
+	dev-python/lxml[${PYTHON_USEDEP}]
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	media-gfx/cairosvg[${PYTHON_USEDEP}]
+"
+DEPEND="
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	doc? ( dev-python/sphinx[${PYTHON_USEDEP}] )
+	test? (
+		${RDEPEND}
+		dev-python/pyquery[${PYTHON_USEDEP}]
+		dev-python/pytest[${PYTHON_USEDEP}]
+	)
+"
+
+# CHANGELOG is a symlink to docs/changelog.rst
+DOCS=( docs/changelog.rst README.md )
+
+python_prepare_all() {
+	sed -i "/sphinx.ext.intersphinx/d" docs/conf.py || die
+	distutils-r1_python_prepare_all
+}
+
+python_compile_all() {
+	if use doc; then
+		sphinx-build docs docs/_build/html || die
+		HTML_DOCS=( docs/_build/html/. )
+	fi
+}
+
+python_test() {
+	py.test || die "tests failed with ${EPYTHON}"
+}
+
+python_install_all() {
+	if use examples; then
+		docinto examples
+		dodoc -r demo/.
+		docompress -x /usr/share/doc/${PF}/examples
+	fi
+	distutils-r1_python_install_all
+}