gnu: python-sphinxext-opengraph: Switch to pyproject.

* gnu/packages/sphinx.scm (python-sphinxext-opengraph):
[build-system]: Switch to pyproject-build-system.
[arguments]<#:phases>: Remove 'check phase replacement.  Add phase
'set-version.
[native-inputs]: Add python-setuptools.

Change-Id: I8e76fb1ec9ac494d4a345e61660e974f2397ca9f
Signed-off-by: Sharlatan Hellseher <sharlatanus@gmail.com>

gnu/packages/sphinx.scm

@@ -1190,15 +1190,17 @@ translate and to apply translation to Sphinx generated document.")
        (file-name (git-file-name name version))
        (sha256
         (base32 "1wrgpan9z65fv4hbvisz4sypc4w5ammnxkyn5lhr43wdr6b967k1"))))
-    (build-system python-build-system)
+    (build-system pyproject-build-system)
     (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (replace 'check
-           (lambda* (#:key tests? #:allow-other-keys)
-             (when tests?
-               (invoke "pytest" "-vv")))))))
-    (native-inputs (list python-beautifulsoup4 python-pytest python-sphinx))
+     (list
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'set-version
+            (lambda _
+              (substitute* "setup.py"
+               (("main") #$version)))))))
+    (native-inputs (list python-beautifulsoup4 python-pytest python-sphinx
+                         python-setuptools))
     (home-page "https://github.com/wpilibsuite/sphinxext-opengraph")
     (synopsis "Sphinx Extension to enable OpenGraph support")
     (description