Make the error message about missing extension more clear

(and more verbose in --verbose mode)

debian/changelog

+python-defaults (2.6.6-6) UNRELEASED; urgency=low
+
+  * Make the error message about missing extension more clear
+    (and more verbose in --verbose mode)
+
+ -- Piotr Ożarowski <piotr@debian.org>  Sat, 06 Nov 2010 00:19:39 +0100
+
 python-defaults (2.6.6-5) experimental; urgency=low
 
   * pycompile: if installed Python is requested via -V option, use it even if

dh_python2

@@ -142,8 +142,13 @@ def share(package, stats, options):
                 versions_without_ext = debsorted(set(pubvers) -\
                                                  stats['public_ext'])
                 if not versions_without_ext:
-                    log.error('you most probably have to build extension '
-                              'for python%s.', vrepr(version))
+                    log.error('extension for python%s is missing',
+                              vrepr(version))
+                    log.info('possible solutions are: building extensions '
+                             'for all supported Python versions '
+                             '(`pyversions -vr`); '
+                             'adjusting X-Python-Version field; '
+                             'passing --no-guessing-versions to dh_python2')
                     exit(12)
                 srcver = versions_without_ext[0]
                 if srcver in stats['public_vers']: