From 8140182f3d53019702f49330a40ffa9d47d8d3df Mon Sep 17 00:00:00 2001
From: Jelmer Vernooij <jelmer@samba.org>
Date: Wed, 8 Sep 2010 22:45:12 +0200
Subject: [PATCH] wafsamba: Eliminate sys.path updating if installing to a
 standard python path.

---
 buildtools/wafsamba/wafsamba.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/buildtools/wafsamba/wafsamba.py b/buildtools/wafsamba/wafsamba.py
index 50d0df24a09..11de9d5dccb 100644
--- a/buildtools/wafsamba/wafsamba.py
+++ b/buildtools/wafsamba/wafsamba.py
@@ -594,8 +594,14 @@ def install_file(bld, destdir, file, chmod=0644, flat=False,
     if python_fixup:
         # fixup the python path it will use to find Samba modules
         inst_file = file + '.inst'
+        if bld.env["PYTHONDIR"] not in sys.path:
+            regex = "s|\(sys.path.insert.*\)bin/python\(.*\)$|\\1${PYTHONDIR}\\2|g"
+        else:
+            # Eliminate updating sys.path if the target python dir is already
+            # in python path.
+            regex = "s|sys.path.insert.*bin/python.*$||g"
         bld.SAMBA_GENERATOR('python_%s' % destname,
-                            rule="sed 's|\(sys.path.insert.*\)bin/python\(.*\)$|\\1${PYTHONDIR}\\2|g' < ${SRC} > ${TGT}",
+                            rule="sed '%s' < ${SRC} > ${TGT}" % regex,
                             source=file,
                             target=inst_file)
         file = inst_file