gnu: python-asynckivy: Update to 0.8.1.

* gnu/packages/python-xyz.scm (python-asynckivy): Update to 0.8.1.
[source]: Switch to git-fetch containing tests.
[build-system]: Switch to pyproejct.
[native-inputs]: Add python-poetry-core and python-pytest.

Change-Id: Ie7145f020e0487799ca8af0ce4506a5ffc290191

gnu/packages/python-xyz.scm

@@ -24793,23 +24793,31 @@ pytest-fixtures-style dependency injection.")
 (define-public python-asynckivy
   (package
     (name "python-asynckivy")
-    (version "0.5.3")
+    (version "0.8.1")
     (source
      (origin
-       (method url-fetch)
-       (uri
-        (pypi-uri "asynckivy" version))
+       (method git-fetch)               ; no tests in PyPI release
+       (uri (git-reference
+             (url "https://github.com/asyncgui/asynckivy")
+             (commit version)))
+       (file-name (git-file-name name version))
        (sha256
-        (base32 "0ivjvch8yn3k1ybfp7c1nm8mhc0ymg7d04mq54lly7yjvg0jvcni"))))
-    (build-system python-build-system)
+        (base32 "0gjddv6d7bbjymvly2x5zaay1gyihls1c4bh7y1ppbvz15152lkj"))))
+    (build-system pyproject-build-system)
     (arguments
-       `(#:phases
-         (modify-phases %standard-phases
+     (list
+      #:phases
+      #~(modify-phases %standard-phases
           (add-before 'check 'set-home
             (lambda _
               ;; 'kivy/__init__.py' wants to create $HOME/.kivy.
-               (setenv "HOME" (getcwd)))))))
-    (propagated-inputs (list python-kivy python-asyncgui))
+              (setenv "HOME" "/tmp"))))))
+    (native-inputs
+     (list python-poetry-core
+           python-pytest))
+    (propagated-inputs
+     (list python-kivy
+           python-asyncgui))
     (home-page "https://github.com/gottadiveintopython/asynckivy")
     (synopsis "Async library for Kivy")
     (description