Install pull-debian-source as python 3. It was ported, and doesn't work under python 2 any more. (LP: #1841127)

debian/changelog

@@ -9,6 +9,8 @@ ubuntu-dev-tools (0.172) UNRELEASED; urgency=medium
     setup.py doesn't provide these) and ubuntu-dev-tools itself.
   * dh_python2 doesn't generate a python dependency in ubuntu-dev-tools, now
     that it's scripts-only, so manually declare one.
+  * Install pull-debian-source as python 3. It was ported, and doesn't work
+    under python 2 any more. (LP: #1841127)
 
  -- Mattia Rizzolo <mattia@debian.org>  Fri, 23 Aug 2019 10:07:40 +0200
 

debian/control

@@ -62,6 +62,9 @@ Depends:
  python-launchpadlib (>= 1.5.7),
  python-lazr.restfulclient,
  python-ubuntutools,
+ python3,
+ python3-distro-info,
+ python3-ubuntutools,
  sensible-utils,
  sudo,
  ${misc:Depends},

setup.py

@@ -16,7 +16,9 @@ if os.path.exists(changelog):
         version = match.group(1)
 
 if sys.version_info[0] >= 3:
-    scripts = []
+    scripts = [
+        'pull-debian-source',
+    ]
     data_files = []
 else:
     scripts = [
@@ -35,7 +37,6 @@ else:
         'pbuilder-dist',
         'pbuilder-dist-simple',
         'pull-debian-debdiff',
-        'pull-debian-source',
         'pull-lp-source',
         'pull-revu-source',
         'pull-uca-source',