File: use-wheels.patch

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From 622ffb4f43d102425b9fbf60897f403433e06a44 Mon Sep 17 00:00:00 2001
From: Barry Warsaw <barry@debian.org>
Date: Fri, 9 Oct 2015 22:23:58 +0200
Subject: Use distro wheels instead of the bundled wheels.

Prepend the wheel paths onto the front of sys.path.  Also, when the venv
is created, copy the system wheels into <venv>/lib/python-wheels for use
by our patched pip wheel.  Make sure the command line script uses the
system wheels first.

Under Debian, we also have to install pkg_resources and _markerlib.
Since these get installed from distro wheels, and since Debian splits
setuptools and pkg_resources into separate binary packages, they get
built into separate wheels.  Thus we have to explicitly install
pkg_resources from wheel or assumptions made by Python packages that the
two always go together will be broken.

Forwarded: not-needed

Patch-Name: use-wheels.patch
---
 scripts/virtualenv              |  9 +++++++
 setup.py                        |  4 ++--
 virtualenv.egg-info/SOURCES.txt |  4 ++--
 virtualenv.py                   | 52 ++++++++++++++++++++++++++++++++++++++---
 4 files changed, 62 insertions(+), 7 deletions(-)

diff --git a/scripts/virtualenv b/scripts/virtualenv
index 418bd79..7dd0203 100644
--- a/scripts/virtualenv
+++ b/scripts/virtualenv
@@ -1,3 +1,12 @@
 #!/usr/bin/python3
 import virtualenv
+
+# Debian: Barry Warsaw <barry@debian.org> 2014-06-02
+# Instead of using the bundled wheels, use the ones in the archive.
+import sys
+for path in virtualenv.find_wheels(virtualenv.DEBIAN_WHEEL_DEPS,
+                                   ['/usr/share/python-wheels']):
+    if path not in sys.path:
+        sys.path.insert(0, path)
+
 virtualenv.main()
diff --git a/setup.py b/setup.py
index ee03bc5..978f1db 100644
--- a/setup.py
+++ b/setup.py
@@ -118,6 +118,6 @@ setup(
     url='https://virtualenv.pypa.io/',
     license='MIT',
     py_modules=['virtualenv'],
-    packages=['virtualenv_support'],
-    package_data={'virtualenv_support': ['*.whl']},
+    #packages=['virtualenv_support'],
+    #package_data={'virtualenv_support': ['*.whl']},
     **setup_params)
diff --git a/virtualenv.egg-info/SOURCES.txt b/virtualenv.egg-info/SOURCES.txt
index 40ba997..7018270 100644
--- a/virtualenv.egg-info/SOURCES.txt
+++ b/virtualenv.egg-info/SOURCES.txt
@@ -41,5 +41,5 @@ virtualenv_embedded/site.py
 virtualenv_support/__init__.py
 virtualenv_support/argparse-1.4.0-py2.py3-none-any.whl
 virtualenv_support/pip-9.0.1-py2.py3-none-any.whl
-virtualenv_support/setuptools-28.8.0-py2.py3-none-any.whl
-virtualenv_support/wheel-0.29.0-py2.py3-none-any.whl
\ No newline at end of file
+virtualenv_support/setuptools-28.7.1-py2.py3-none-any.whl
+virtualenv_support/wheel-0.29.0-py2.py3-none-any.whl
diff --git a/virtualenv.py b/virtualenv.py
index 42cd1f4..0e1d03f 100755
--- a/virtualenv.py
+++ b/virtualenv.py
@@ -39,6 +39,12 @@ except ImportError:
 __version__ = "15.1.0"
 virtualenv_version = __version__  # legacy
 
+# Debian: Barry Warsaw <barry@debian.org> 2014-06-06
+DEBIAN_WHEEL_DEPS = [
+    os.path.basename(whl).split('-')[0]
+    for whl in glob.glob('/usr/share/python-wheels/*.whl')
+    ]
+
 if sys.version_info < (2, 6):
     print('ERROR: %s' % sys.exc_info()[1])
     print('ERROR: this script requires Python 2.6 or greater.')
@@ -398,7 +404,11 @@ def _find_file(filename, dirs):
 
 def file_search_dirs():
     here = os.path.dirname(os.path.abspath(__file__))
-    dirs = [here, join(here, 'virtualenv_support')]
+    # Debian: Barry Warsaw <barry@debian.org> 2015-06-11
+    # Don't include the bundled wheels in the search dirs, since we strip them
+    # out in favor of the system wheels.
+    #dirs = [here, join(here, 'virtualenv_support')]
+    dirs = [here, '/usr/share/python-wheels/']
     if os.path.splitext(os.path.dirname(__file__))[0] != 'virtualenv':
         # Probably some boot script; just in case virtualenv is installed...
         try:
@@ -744,7 +754,16 @@ def call_subprocess(cmd, show_stdout=True,
             for varname in remove_from_env:
                 env.pop(varname, None)
     else:
-        env = None
+        env = {}
+    # Debian: Barry Warsaw <barry@debian.org> 2014-06-06
+    # We're about to execute $python -c "import sys, pip ..." and run
+    # pip.main().  We have to make sure to find pip and setuptools via the
+    # wheels if they exist.
+    syspath_parts = env.get('PYTHONPATH', '').split(os.pathsep)
+    for path in find_wheels(DEBIAN_WHEEL_DEPS, ['/usr/share/python-wheels']):
+        if path not in syspath_parts:
+            syspath_parts.insert(0, path)
+    env['PYTHONPATH'] = os.pathsep.join(syspath_parts)
     try:
         proc = subprocess.Popen(
             cmd, stderr=subprocess.STDOUT,
@@ -861,7 +880,8 @@ def install_wheel(project_names, py_executable, search_dirs=None,
 
         import pip
 
-        cert_data = pkgutil.get_data("pip._vendor.requests", "cacert.pem")
+        #cert_data = pkgutil.get_data("pip._vendor.requests", "cacert.pem")
+        cert_data = None
         if cert_data is not None:
             cert_file = tempfile.NamedTemporaryFile(delete=False)
             cert_file.write(cert_data)
@@ -928,8 +948,34 @@ def create_environment(home_dir, site_packages=False, clear=False,
 
     to_install = []
 
+    # Debian: Barry Warsaw <barry@debian.org> 2014-06-06
+    # Copy system wheels into the venv directory where our hacked pip will
+    # search, i.e. <venv>/share/python-wheels.
+    destdir = os.path.join(home_dir, 'share', 'python-wheels')
+    try:
+        # The directory could exist.  Because this code may run under Python
+        # 2, we can't use `exist_ok=True`.  Catch and ignore the old way.
+        os.makedirs(destdir)
+    except OSError as error:
+        if error.errno != errno.EEXIST:
+            raise
+    for project in DEBIAN_WHEEL_DEPS:
+        wheel_names = glob.glob(
+            '/usr/share/python-wheels/{0}-*.whl'.format(project))
+        if len(wheel_names) == 0:
+            raise RuntimeError('missing dependency wheel %s' % project)
+        assert len(wheel_names) == 1, wheel_names
+        wheel_name = os.path.basename(wheel_names[0])
+        path = os.path.join('/usr/share/python-wheels', wheel_name)
+        with open(path, 'rb') as fp:
+            whl = fp.read()
+        dest = os.path.join(destdir, wheel_name)
+        with open(dest, 'wb') as fp:
+            fp.write(whl)
+
     if not no_setuptools:
         to_install.append('setuptools')
+        to_install.append('pkg_resources')
 
     if not no_pip:
         to_install.append('pip')