Merge lp:~statik/python-distutils-extra/bug-464137 into lp:python-distutils-extra

[Elliot Murphy]

Warn and exit if unable to create the changelog due to debchange missing.

[Elliot Murphy (statik)]

Warn and exit if unable to create the changelog due to debchange missing.

=== modified file 'debian/local/python-mkdebian'
--- debian/local/python-mkdebian	2010-02-05 22:42:55 +0000
+++ debian/local/python-mkdebian	2010-02-06 02:11:10 +0000
@@ -199,6 +199,11 @@
     release = lsb_release.communicate()[0].strip()
     assert lsb_release.returncode == 0
 
+    if not os.path.exists('/usr/bin/debchange'):
+        print >> sys.stderr, 'ERROR: Could not find "debchange".\n' \
+            'You need to install the "devscripts" package for this.'
+        sys.exit(0)
+
     if not os.path.exists('debian/changelog'):
         if not changelog:
             changelog = ['Initial release.']