[kupfer] wscript: If python is not found, try setting to python2.6

[Ulrik Sverdrup <usverdrup src gnome org>]

commit f7082205cc77f45464d78a635403efb9638bdeb2
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Mon Feb 15 01:37:10 2010 +0100

    wscript: If python is not found, try setting to python2.6

 wscript |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/wscript b/wscript
index bfd2bf8..1c6da3d 100644
--- a/wscript
+++ b/wscript
@@ -106,7 +106,15 @@ def set_options(opt):
 
 def configure(conf):
 	conf.check_tool("python")
-	conf.check_python_version((2,6,0))
+	try:
+		conf.check_python_version((2,6,0))
+	except Configure.ConfigurationError:
+		# with explicitly set python that is not found, we
+		# must show an error
+		if os.getenv("PYTHON"):
+			raise
+		conf.env["PYTHON"] = "python2.6"
+		conf.check_python_version((2,6,0))
 	conf.check_tool("misc gnu_dirs")
 
 	# BUG: intltool requires gcc