gnu: Add python-pyrss2gen.

* gnu/packages/python-xyz.scm (python-pyrss2gen): New variable.

gnu/packages/python-xyz.scm

@@ -28341,3 +28341,20 @@ (define-public python-piexif
 Python.  It includes the tools necessary for extracting, creating,
 manipulating, converting and writing EXIF data to JPEG, WebP and TIFF files.")
     (license license:expat)))
+
+(define-public python-pyrss2gen
+  (package
+    (name "python-pyrss2gen")
+    (version "1.1")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (pypi-uri "PyRSS2Gen" version))
+        (sha256
+          (base32 "1rvf5jw9hknqz02rp1vg8abgb1lpa0bc65l7ylmlillqx7bswq3r"))))
+    (build-system python-build-system)
+    (home-page "http://dalkescientific.com/Python/PyRSS2Gen.html")
+    (synopsis "Generate RSS 2.0 feeds using a Python data structure")
+    (description "PyRSS2Gen is the interface to generate RSS 2.0 feeds.
+PyRSS2Gen builds the feed up by using a XML generator.")
+    (license license:bsd-3)))