dev-python/packaging: Bump to 21.0

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

dev-python/packaging/Manifest

@@ -1 +1,2 @@
 DIST packaging-20.9.gh.tar.gz 78041 BLAKE2B d87c66aa39cfb832a26a350981722ad40a9193b70ca447030405ee474586cc12e4ae5f4dc7fbc5da6944b717545f3d3f7caac376a3da1ab95aa26429723dc6f6 SHA512 fb71f1036cfaacbe94fdee663af31d6ad1960f73ecc95cba87b461c2d7d2ea90085853bb4682b146492d8c48f784b60ef082e3b1259269857166b143cd9a920b
+DIST packaging-21.0.gh.tar.gz 79977 BLAKE2B 4ddfa5069f463abeab09ed92650a174d58622927d24b22eed184506d36d9144520e90cd5ea6570e7c06af3c768eda608decc4befb402942e6d6cd1ba5cb10b42 SHA512 612744ad8d0b834709af5d4e2415679271e4cdc304a2e9297ec741e37e62241a041b678568130cd733828a1bf2e5885d62de706934f4018195566107989a6f6b

dev-python/packaging/packaging-21.0.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} pypy3  )
+inherit distutils-r1
+
+DESCRIPTION="Core utilities for Python packages"
+HOMEPAGE="
+	https://github.com/pypa/packaging/
+	https://pypi.org/project/packaging/"
+SRC_URI="
+	https://github.com/pypa/packaging/archive/${PV}.tar.gz -> ${P}.gh.tar.gz"
+
+SLOT="0"
+LICENSE="|| ( Apache-2.0 BSD-2 )"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+
+RDEPEND="
+	>=dev-python/pyparsing-2.1.10[${PYTHON_USEDEP}]
+"
+DEPEND="
+	test? (
+		dev-python/pretend[${PYTHON_USEDEP}]
+	)
+"
+
+distutils_enable_tests pytest
+
+python_test() {
+	epytest --capture=no
+}