debian: add support for python3 (#41564)

debian/compat

@@ -1 +1 @@
-7
+9

debian/control

@@ -2,18 +2,27 @@ Source: python-authentic2-cut
 Maintainer: Benjamin Dauvergne <bdauvergne@entrouvert.com>
 Section: python
 Priority: optional
-Build-Depends: python-setuptools (>= 0.6b3), python-all (>= 2.6), debhelper (>= 7.4.3),
- python-django (>= 1.7)
+Build-Depends: python3-setuptools, python3-all, python-setuptools, python-all, debhelper (>= 9.0.0),
+    python-django (>= 1.11), python3-django (>= 1.11), dh-python
 Standards-Version: 3.9.1
-X-Python-Version: >= 2.6
 
 Package: python-authentic2-cut
 Architecture: all
-Depends: ${misc:Depends},
-    python-authentic2 (>= 2.1.20.1054),
+Depends: ${misc:Depends}, ${python:Depends},
+    python-authentic2,
     python-magic,
     python-pil,
     python-sorl-thumbnail,
     graphicsmagick-imagemagick-compat
 Description: CUT plugin for Authentic2
 
+Package: python3-authentic2-cut
+Architecture: all
+Depends: ${misc:Depends}, ${python3:Depends},
+    python3-authentic2,
+    python3-magic,
+    python3-pil,
+    python3-sorl-thumbnail,
+    graphicsmagick-imagemagick-compat
+Description: CUT plugin for Authentic2
+

debian/rules

@@ -1,6 +1,7 @@
 #!/usr/bin/make -f
 
+export PYBUILD_DISABLE=test
+export PYBUILD_NAME=authentic2-cut
+
 %:
-	dh $@ --with python2 --buildsystem=python_distutils
-
-
+	dh $@ --with python2,python3 --buildsystem=pybuild