dev-python/graphviz: Bump to 0.18

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

dev-python/graphviz/Manifest

@@ -1 +1,2 @@
 DIST graphviz-0.17.zip 193647 BLAKE2B f2f5ad728157d60c48964d2cfdc76559310af6099a9eae16279b0f9e8a41c08d02d5f255be62222c1f0808750a26e67822b5fbb930f7ada5c6a614c3607494cd SHA512 02f5ef21f9e3bf3b609f43fe0d9cb51632ea43c878055746af62fda4dd55883f6ad58f69faecb6aba552100cc835901309c8c2ec833cd74c617619fce2d49600
+DIST graphviz-0.18.zip 199876 BLAKE2B 355478a4341fb5a286b7419a6799c809f7489f80911e21d94be8d63c957ed9952d5f72b1aac6258fb8b3146424c61de64085fd02c0da14b8b4c6fd447568fb92 SHA512 56eb4252076ddb4fd3ad691199e67d58dab766828d9c80403df60cda80cd58cbb04f96edbacef674300f4f63eace0144322c73501737342c797fb7b9a203a722

dev-python/graphviz/graphviz-0.18.ebuild

@@ -0,0 +1,33 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..10} )
+inherit distutils-r1
+
+DESCRIPTION="Simple Python interface for Graphviz"
+HOMEPAGE="https://graphviz.readthedocs.io/"
+SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.zip"
+
+LICENSE="MIT"
+KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
+SLOT="0"
+
+RDEPEND="media-gfx/graphviz"
+BDEPEND="
+	app-arch/unzip
+	test? (
+		>=dev-python/mock-2.0.0[${PYTHON_USEDEP}]
+		>=dev-python/pytest-mock-1.8[${PYTHON_USEDEP}]
+		media-gfx/graphviz[gts,pdf]
+	)
+"
+
+distutils_enable_tests pytest
+
+src_prepare() {
+	sed -e 's:--cov --cov-report=term --cov-report=html::' \
+		-i setup.cfg || die
+	distutils-r1_src_prepare
+}