dev-python/jaraco-context: New dep of dev-python/cheroot

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

dev-python/jaraco-context/Manifest

@@ -0,0 +1 @@
+DIST jaraco.context-3.0.0.tar.gz 12901 BLAKE2B b0a18d8799de211c9827a708302798372dff06767fbac08f4bff8ed48e1dde4cca8d3896a3c4dccd186efdc4d80ffe2b972a05e8f351ec53dcd0c7dec45cfcea SHA512 fd48a9af65edea3212c194758ba1a8fc2d7efc35f7eaec959a7f327ad46d1bf15f295af29d62726f813d35baaeaff35bc3fcd6e27a0e0f272232772e1cb87c17

dev-python/jaraco-context/files/jaraco-context-3.0.0-useless-deps.patch

@@ -0,0 +1,62 @@
+From e3a1f344c296f9d6193f4bf2ac1e0cdafcddce0e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
+Date: Mon, 20 Jul 2020 18:11:31 +0200
+Subject: [PATCH] Make jaraco.apt & yg.lockfile imports optional
+
+Handle missing jaraco.apt & yg.lockfile modules more gracefully,
+delaying the error until dependency_context is actually used.  These
+two modules are only used by the dependency_context, and this context
+can only work on apt-based systems, so there is no point in forcing
+the extraneous dependencies on systems that do not use apt where
+jaraco.context is being installed for other context managers.
+---
+ jaraco/context.py | 19 ++++++++++++++++---
+ 1 file changed, 16 insertions(+), 3 deletions(-)
+
+diff --git a/jaraco/context.py b/jaraco/context.py
+index 0b5b1bc..13dfdf6 100644
+--- a/jaraco/context.py
++++ b/jaraco/context.py
+@@ -13,8 +13,15 @@ try:
+ except Exception:
+     import contextlib as contextlib2
+ 
+-import jaraco.apt
+-import yg.lockfile
++try:
++    import jaraco.apt as apt
++except ImportError:
++    apt = None
++
++try:
++    import yg.lockfile
++except ImportError:
++    yg = None
+ 
+ 
+ __metaclass__ = type
+@@ -131,6 +138,12 @@ def dependency_context(package_names, aggressively_remove=False):
+     """
+     installed_packages = []
+     log = logging.getLogger(__name__)
++    if apt is None:
++        log.error("jaraco.apt not found installed")
++        raise ImportError("jaraco.apt not found installed")
++    if yg is None:
++        log.error("yg.lockfile not found installed")
++        raise ImportError("yg.lockfile not found installed")
+     try:
+         if not package_names:
+             logging.debug('No packages requested')
+@@ -144,7 +157,7 @@ def dependency_context(package_names, aggressively_remove=False):
+                 stderr=subprocess.STDOUT,
+             )
+             log.debug('Aptitude output:\n%s', output)
+-            installed_packages = jaraco.apt.parse_new_packages(
++            installed_packages = apt.parse_new_packages(
+                 output, include_automatic=aggressively_remove
+             )
+             if not installed_packages:
+-- 
+2.27.0
+

dev-python/jaraco-context/jaraco-context-3.0.0.ebuild

@@ -0,0 +1,47 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# upstream uses bad template
+DISTUTILS_USE_SETUPTOOLS=manual
+PYTHON_COMPAT=( python3_{6..9} pypy3 )
+
+inherit distutils-r1
+
+MY_PN="${PN/-/.}"
+DESCRIPTION="Context managers by jaraco"
+HOMEPAGE="https://github.com/jaraco/jaraco.context"
+SRC_URI="mirror://pypi/${PN:0:1}/${MY_PN}/${MY_PN}-${PV}.tar.gz"
+S="${WORKDIR}/${MY_PN}-${PV}"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+
+RDEPEND="
+	>=dev-python/namespace-jaraco-2[${PYTHON_USEDEP}]
+"
+BDEPEND="
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	dev-python/setuptools_scm[${PYTHON_USEDEP}]
+"
+
+distutils_enable_tests pytest
+
+PATCHES=(
+	"${FILESDIR}"/${P}-useless-deps.patch
+)
+
+python_prepare_all() {
+	# used only for apt support that's irrelevant to Gentoo
+	sed -i -e '/jaraco\.apt/d' -e '/yg\.lockfile/d' setup.cfg || die
+	# pytest plugins
+	sed -i -e 's:--flake8 --black --cov::' pytest.ini || die
+	distutils-r1_python_prepare_all
+}
+
+python_install() {
+	rm "${BUILD_DIR}"/lib/jaraco/__init__.py || die
+	distutils-r1_python_install
+}

dev-python/jaraco-context/metadata.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>python@gentoo.org</email>
+		<name>Python</name>
+	</maintainer>
+</pkgmetadata>