dev-python/pip: disable systemwide installs

Bug: https://bugs.gentoo.org/553762

Package-Manager: Portage-2.3.3_p13, Repoman-2.3.1_p6

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

@@ -0,0 +1,29 @@
+From 847553da616edabede18c69ba640a32b719b45a8 Mon Sep 17 00:00:00 2001
+From: Mike Gilbert <floppym@gentoo.org>
+Date: Tue, 27 Oct 2015 12:20:44 -0400
+Subject: [PATCH] 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/commands/install.py | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/pip/commands/install.py b/pip/commands/install.py
+index 46cd9f2..36b72f2 100644
+--- a/pip/commands/install.py
++++ b/pip/commands/install.py
+@@ -204,6 +204,9 @@ class InstallCommand(RequirementCommand):
+             )
+             options.ignore_installed = True
+ 
++        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)
+ 
+-- 
+2.6.2
+

dev-python/pip/pip-9.0.1-r1.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2016 Gentoo Foundation
+# Copyright 1999-2017 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$
 
@@ -58,12 +58,10 @@ RESTRICT="test"
 DEPEND="dev-python/setuptools[${PYTHON_USEDEP}]"
 RDEPEND="${DEPEND}"
 
-src_prepare() {
-	epatch "${FILESDIR}"/${PN}-9.0.1-disable-version-check.patch
-
-	distutils-r1_src_prepare
-	eapply_user
-}
+PATCHES=(
+	"${FILESDIR}/pip-disable-system-install.patch"
+	"${FILESDIR}/${PN}-9.0.1-disable-version-check.patch"
+)
 
 python_install_all() {
 	local DOCS=( AUTHORS.txt docs/*.rst )