gnu: python-django-contrib-comments: Update to 2.2.0.

* gnu/packages/django.scm (python-django-contrib-comments): Update to 2.2.0.
[source]: Switch to git-fetch.
[build-system]: Switch to pyproject-build-system.
[arguments]: Set <#:test-backend>, <#:test-flags>.
[native-inputs]: Add python-setuptools, tzdata-for-tests.
[propagated-inputs]: Remove python-six.

Change-Id: I4bb4b09790efbd029f6f91702faa9316f268355b
Signed-off-by: Sharlatan Hellseher <sharlatanus@gmail.com>

gnu/packages/django.scm

@@ -957,16 +957,23 @@ for Django sites.")
 (define-public python-django-contrib-comments
   (package
     (name "python-django-contrib-comments")
-    (version "1.9.2")
+    (version "2.2.0")
-    (source (origin
+    (source
-              (method url-fetch)
+     (origin
-              (uri (pypi-uri "django-contrib-comments" version))
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/django/django-contrib-comments")
+             (commit version)))
+       (file-name (git-file-name name version))
        (sha256
-               (base32
+        (base32 "17mymw64bm5f19iq6dlpcbbycamy2a0wrnfzrbnw8diysc3fsnpr"))))
-                "0ccdiv784a5vnpfal36km4dyg12340rwhpr0riyy0k89wfnjn8yi"))))
+    (build-system pyproject-build-system)
-    (build-system python-build-system)
+    (arguments
-    (propagated-inputs
+     (list
-     (list python-django python-six))
+      #:test-backend #~'custom
+      #:test-flags #~(list "tests/runtests.py")))
+    (native-inputs (list python-setuptools tzdata-for-tests))
+    (propagated-inputs (list python-django))
     (home-page "https://github.com/django/django-contrib-comments")
     (synopsis "Comments framework")
     (description