improve workaround for #1644

Make it possible to use a more recent version of pip for tests.

1 files changed, 29 insertions, 0 deletions

diff --git a/tools/tox_pip.py b/tools/tox_pip.py
new file mode 100644
index 00000000..1117f996
--- /dev/null
+++ b/tools/tox_pip.py
@@ -0,0 +1,29 @@
+import os
+import shutil
+import subprocess
+import sys
+from glob import glob
+
+VIRTUAL_ENV = os.environ['VIRTUAL_ENV']
+TOX_PIP_DIR = os.path.join(VIRTUAL_ENV, 'pip')
+
+
+def pip(args):
+    # First things first, get a recent (stable) version of pip.
+    if not os.path.exists(TOX_PIP_DIR):
+        subprocess.check_call([sys.executable, '-m', 'pip',
+                               '--disable-pip-version-check',
+                               'install', '-t', TOX_PIP_DIR,
+                               'pip'])
+        shutil.rmtree(glob(os.path.join(TOX_PIP_DIR, 'pip-*.dist-info'))[0])
+    # And use that version.
+    for n, a in enumerate(args):
+        if not a.startswith('-'):
+            if a in 'install' and '-e' in args[n:]:
+                args.insert(n + 1, '--no-use-pep517')
+            break
+    subprocess.check_call([sys.executable, os.path.join(TOX_PIP_DIR, 'pip')] + args)
+
+
+if __name__ == '__main__':
+    pip(sys.argv[1:])