dev-python/zipp: Add from Gentoo

It's from Gentoo commit 38679f1de08fd0b87579439d5ad4aeee2ce1ef7e.

It's a dependency of dev-python/importlib_metadata.

sdk_container/src/third_party/portage-stable/dev-python/zipp/Manifest

@@ -0,0 +1 @@
+DIST zipp-3.8.0.tar.gz 13344 BLAKE2B 0da3ca4ff683ac840759030b6ee5125bb1a1b1b8737f0ff0499f3193d13dc3163c6c1fd29c5f1667f347728c991930e3d9e3a325ffb89b6fecb9f6590887bcaa SHA512 d677f941dc92a784b8bd197ca2e1f6f3a570dc236c9eeddcb6108d6f55ad3d35a82462abeeb4bac6ea434442737aea960d941c2a7d0bd416da9abee153c99bb8

sdk_container/src/third_party/portage-stable/dev-python/zipp/metadata.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>sbraz@gentoo.org</email>
+		<name>Louis Sautier</name>
+	</maintainer>
+	<maintainer type="project">
+		<email>python@gentoo.org</email>
+		<name>Python</name>
+	</maintainer>
+	<stabilize-allarches/>
+	<upstream>
+		<remote-id type="pypi">zipp</remote-id>
+		<remote-id type="github">jaraco/zipp</remote-id>
+		<bugs-to>https://github.com/jaraco/zipp/issues</bugs-to>
+	</upstream>
+</pkgmetadata>

sdk_container/src/third_party/portage-stable/dev-python/zipp/zipp-3.8.0.ebuild

@@ -0,0 +1,56 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# please keep this ebuild at EAPI 7 -- sys-apps/portage dep
+EAPI=7
+
+DISTUTILS_USE_PEP517=flit
+PYTHON_COMPAT=( pypy3 python3_{8..10} )
+
+inherit distutils-r1
+
+DESCRIPTION="Backport of pathlib-compatible object wrapper for zip files"
+HOMEPAGE="https://github.com/jaraco/zipp/"
+SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+
+BDEPEND="
+	test? (
+		dev-python/jaraco-itertools[${PYTHON_USEDEP}]
+	)
+"
+
+distutils_enable_sphinx docs \
+	">=dev-python/jaraco-packaging-3.2" \
+	">=dev-python/rst-linker-1.9"
+distutils_enable_tests pytest
+
+EPYTEST_DESELECT=(
+	# speed tests are flaky by design
+	test_zipp.py::TestPath::test_implied_dirs_performance
+)
+
+src_prepare() {
+	# dep of disabled test
+	sed -i -e '/func_timeout/d' test_zipp.py || die
+	distutils-r1_src_prepare
+}
+
+src_configure() {
+	grep -q 'build-backend = "setuptools' pyproject.toml ||
+		die "Upstream changed build-backend, recheck"
+	# write a custom pyproject.toml to ease setuptools bootstrap
+	cat > pyproject.toml <<-EOF || die
+		[build-system]
+		requires = ["flit_core >=3.2,<4"]
+		build-backend = "flit_core.buildapi"
+
+		[project]
+		name = "zipp"
+		version = "${PV}"
+		description = "Backport of pathlib-compatible object wrapper for zip files"
+	EOF
+}