d/control: Make a python3-swh.auth.django package

Separate python3-swh.auth from python3-swh.auth.django to avoid pulling too much
dependencies.

Not all applications will require the django part.

Related to T3079

debian/control

@@ -6,8 +6,10 @@ Build-Depends: debhelper (>= 9),
                dh-python (>= 2),
                python3-all,
                python3-click,
+               python3-django (>= 2:2.2.11~),
                python3-keycloak,
                python3-pytest,
+               python3-pytest-django,
                python3-setuptools,
                python3-setuptools-scm,
                python3-swh.core,
@@ -20,3 +22,9 @@ Depends: python3-swh.core,
          ${misc:Depends},
          ${python3:Depends}
 Description: Software Heritage Authentication library
+
+Package: python3-swh.auth.django
+Architecture: all
+Depends: python3-swh.auth (= ${binary:Version}),
+         ${misc:Depends}, ${python3:Depends}
+Description: Software Heritage Deposit Loader

debian/rules

@@ -9,3 +9,8 @@ export PYBUILD_TEST_ARGS=-x -v -m "not db and not fs and not network"
 override_dh_install:
 	dh_install
 	rm -v $(CURDIR)/debian/python3-*/usr/lib/python*/dist-packages/swh/__init__.py
+	for pyvers in $(shell py3versions -vr); do \
+		mkdir -p $(CURDIR)/debian/python3-swh.auth.django/usr/lib/python$$pyvers/dist-packages/swh/auth/django ; \
+		mv $(CURDIR)/debian/python3-swh.auth/usr/lib/python$$pyvers/dist-packages/swh/auth/django/* \
+		   $(CURDIR)/debian/python3-swh.auth.django/usr/lib/python$$pyvers/dist-packages/swh/auth/django/ ; \
+	done

[Phabricator Migration user]

Some references in the commit message have been migrated:

• T3079 is now swh/meta#3079 (closed)