[PATCH v2 4/8] git_remote_helpers: use 2to3 if building with Python 3

From: John Keeping <john@keeping.me.uk>
Date: Jan 17, 2013, 18:53 UTC
Message-ID: <bcef80fb913ca829bd2d08284e364ebd55b7297e.1358448207.git.john@keeping.me.uk>
In-Reply-To: <cover.1358448207.git.john@keeping.me.uk>

Using the approach detailed on the Python wiki[1], run 2to3 on the code as part of the build if building with Python 3.

The code itself requires no changes to convert cleanly.

[1] http://wiki.python.org/moin/PortingPythonToPy3k

Signed-off-by: John Keeping <john@keeping.me.uk>
---
 git_remote_helpers/setup.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/git_remote_helpers/setup.py b/git_remote_helpers/setup.py
index 4d434b6..6de41de 100644
--- a/git_remote_helpers/setup.py
+++ b/git_remote_helpers/setup.py
@@ -4,6 +4,15 @@
 
 from distutils.core import setup
 
+# If building under Python3 we need to run 2to3 on the code, do this by
+# trying to import distutils' 2to3 builder, which is only available in
+# Python3.
+try:
+    from distutils.command.build_py import build_py_2to3 as build_py
+except ImportError:
+    # 2.x
+    from distutils.command.build_py import build_py
+
 setup(
     name = 'git_remote_helpers',
     version = '0.1.0',
@@ -14,4 +23,5 @@ setup(
     url = 'http://www.git-scm.com/',
     package_dir = {'git_remote_helpers': ''},
     packages = ['git_remote_helpers', 'git_remote_helpers.git'],
+    cmdclass = {'build_py': build_py},
 )

-- 
1.8.1.1.260.g99b33f4.dirty