Create a temporary dir for patch to do its work.

checkout.py

Index: checkout.py
===================================================================
--- checkout.py	(revision 211180)
+++ checkout.py	(working copy)
@@ -620,7 +620,12 @@
             cmd = ['apply', '--index', '-p%s' % p.patchlevel]
             if verbose:
               cmd.append('--verbose')
+            new_tmpdir = tempfile.mkdtemp('pfix')
+            old_tmpdir = os.environ['TMPDIR']

[Isaac (away), 2013/07/12 04:03:42]

are you sure this environment variable exists?

[groby-ooo-7-16, 2013/07/12 04:16:16]

Doesn't matter if it exists - according to the patch sources [1], it's the one
that takes precedence over all other environment variables.

[1]: http://gnuwin32.sourceforge.net/packages/patch.htm

On 2013/07/12 04:03:42, Isaac wrote:

+            os.environ['TMPDIR'] = new_tmpdir
             stdout.append(self._check_output_git(cmd, stdin=p.get(True)))
+            os.environ['TMPDIR'] = old_tmpdir
+            shutil.rmtree(new_tmpdir)

[Isaac (away), 2013/07/12 04:03:42]

this should be a try finally (with rmtree in the finally section)

[groby-ooo-7-16, 2013/07/12 04:16:16]

Done.

           for name, value in p.svn_properties:
             # Ignore some known auto-props flags through .subversion/config,
             # bails out on the other ones.