Migrate to pybuild.

debian/changelog

@@ -1,3 +1,9 @@
+dulwich (0.19.5-2) UNRELEASED; urgency=medium
+
+  * Migrate to pybuild.
+
+ -- Jelmer Vernooij <jelmer@debian.org>  Sat, 11 Aug 2018 13:04:36 +0100
+
 dulwich (0.19.5-1) unstable; urgency=medium
 
   * New upstream release.

debian/rules

@@ -12,7 +12,7 @@ pythonpath_dbg = $$(ls -d $(CURDIR)/build/lib_d.*-$(1) 2>/dev/null || ls -d $(CU
 pyflavours = python2,python3$(shell which pypy >/dev/null && echo -n ,pypy)
 
 %:
-	dh $* --with $(pyflavours) --buildsystem=python_distutils
+	dh $* --with $(pyflavours) --buildsystem=pybuild
 
 override_dh_auto_build:
 	dh_auto_build