dev-python/pip: bump to 19.1

- Bump EAPI to 7
- Fix completion file installation

Closes: https://bugs.gentoo.org/671286
Package-Manager: Portage-2.3.63, Repoman-2.3.12
Signed-off-by: Maxim Koltsov <maksbotan@gentoo.org>

dev-python/pip/Manifest

@@ -1,3 +1,4 @@
 DIST pip-10.0.1.tar.gz 1246072 BLAKE2B e08607be43e1d7b9c7bbc12dff73bc3170953f48f8f7439a0b27b9d540f23eb3bca7873211a5f1448b5cedd6e8e12983af6fa4666bba3ac4700059d170036733 SHA512 983cce8375ff0304263209c69be16e5be7a58af340b8c3ffddd64fcea130b2f8f8a98305ab31e9c3eed9a0d039c73777c88bde3bf2ea1e184fa3e0a2faa97fd4
+DIST pip-19.1.tar.gz 1334822 BLAKE2B afc2163c65a5ae181ffcf06f5fd8f321cff7c480d7cfac913b2f883c36840e79232f2a139f05659fc5bb583b8a35bdda583d22db152c8b8290c9e8c66e89dfaf SHA512 b10f6a8e0cc71b4987657acb90e677217a485f3605cca3ac9fe946102a8b6e07346d69952469db264e9aa7753015695818f107e361beab8a9fd0fbd5410900df
 DIST pip-7.1.2.tar.gz 1049170 BLAKE2B 1461abba4cb80a9a4e806675ca2d996dedeeb8fb38f05b618f98f400475405da018ea6e75663c21b7b7eb5091408d602a3127afeea9a4bd29f075e5eb8042ad0 SHA512 78082afe6b559bf87f91ae9b6d304cfbfce00206e09be42fdae9d449a55cd8d968df6873e834191d0b0e6baae29e72eb3eee42386ff7c5dc9c29b6c28b754449
 DIST pip-9.0.1.tar.gz 1197370 BLAKE2B 3618161690d5e0a38d141f9b51baea4aaa3fdc225664ef180bbeecf6e2df95e9ea4f97c63fe3a68f84f4fb5ebcc74e316827253c7e07b03565e58113bbaa918a SHA512 ee59efb4b009ff6543b7afdea99b9cbbee1981ecc03af586acda76674024d3b66dab23049e68f3da9448734984619fc1eaba6e965c9dd3d731973376c8a42e25

dev-python/pip/files/pip-19.1-disable-system-install.patch

@@ -0,0 +1,17 @@
+install: Raise an error to avoid breaking python-exec
+
+Running pip without --target, --root, or --user will result in packages
+being installed systemwide. This has a tendency to break python-exec if
+setuptools gets installed or upgraded.
+
+--- pip-19.1/src/pip/_internal/commands/install.py
++++ pip-19.1/src/pip/_internal/commands/install.py
+@@ -246,6 +246,9 @@ class InstallCommand(RequirementCommand):
+         if options.upgrade:
+             upgrade_strategy = options.upgrade_strategy
+
++        if not options.use_user_site and not options.target_dir and not options.root_path:
++            raise CommandError("(Gentoo) Please run pip with the --user option to avoid breaking python-exec")
++
+         if options.build_dir:
+             options.build_dir = os.path.abspath(options.build_dir)

dev-python/pip/files/pip-19.1-disable-version-check.patch

@@ -0,0 +1,19 @@
+Don't check for new versions of pip.
+
+--- pip-19.1/src/pip/_internal/cli/base_command.py
++++ pip-19.1/src/pip/_internal/cli/base_command.py
+@@ -213,12 +213,8 @@ class Command(object):
+ 
+             return UNKNOWN_ERROR
+         finally:
+-            allow_version_check = (
+-                # Does this command have the index_group options?
+-                hasattr(options, "no_index") and
+-                # Is this command allowed to perform this check?
+-                not (options.disable_pip_version_check or options.no_index)
+-            )
++            # Disabled on Gentoo
++            allow_version_check = False
+             # Check if we're using the latest version of pip available
+             if allow_version_check:
+                 session = self._build_session(

dev-python/pip/pip-19.1.ebuild

@@ -0,0 +1,53 @@
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 python3_{5,6,7} pypy{,3} )
+PYTHON_REQ_USE="ssl(+),threads(+)"
+
+inherit eutils bash-completion-r1 distutils-r1
+
+DESCRIPTION="Installs python packages -- replacement for easy_install"
+HOMEPAGE="https://pip.pypa.io/ https://pypi.org/project/pip/ https://github.com/pypa/pip/"
+SRC_URI="mirror://pypi/${PN:0:1}/${PN}/${P}.tar.gz"
+
+LICENSE="MIT"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~amd64-fbsd ~amd64-linux ~x86-linux"
+SLOT="0"
+IUSE="-vanilla"
+
+# required test data isn't bundled with the tarball
+RESTRICT="test"
+
+DEPEND="dev-python/setuptools[${PYTHON_USEDEP}]"
+RDEPEND="${DEPEND}"
+
+python_prepare_all() {
+	local PATCHES=(
+		"${FILESDIR}/${PN}-19.1-disable-version-check.patch"
+	)
+	if ! use vanilla; then
+		PATCHES+=( "${FILESDIR}/pip-19.1-disable-system-install.patch" )
+	fi
+	distutils-r1_python_prepare_all
+}
+
+python_install_all() {
+	local DOCS=( AUTHORS.txt docs/html/**/*.rst )
+	distutils-r1_python_install_all
+
+	COMPLETION="${T}"/completion.tmp
+
+	# 'pip completion' command embeds full $0 into completion script, which confuses
+	# 'complete' and causes QA warning when running as "${PYTHON} -m pip".
+	# This trick sets correct $0 while still calling just installed pip.
+	local pipcmd='import sys; sys.argv[0] = "pip"; import pip.__main__; sys.exit(pip.__main__._main())'
+
+	${PYTHON} -c "${pipcmd}" completion --bash > "${COMPLETION}" || die
+	newbashcomp "${COMPLETION}" ${PN}
+
+	${PYTHON} -c "${pipcmd}" completion --zsh > "${COMPLETION}" || die
+	insinto /usr/share/zsh/site-functions
+	newins "${COMPLETION}" _pip
+}