gnu: python-ply: Switch to pyproject-build-system.

* gnu/packages/python-xyz.scm (python-ply):
  [build-system]: Use pyproject.
  [arguments] <tests?>: Visually disable them as PyPI archive provides
  no tests, where Git source contains.
  [native-inputs]: Add python-setuptools and python-wheel.

Change-Id: I99b04238b4ec4421d6d7acae47edb915826d9c94

gnu/packages/python-xyz.scm

@@ -22935,9 +22935,12 @@ network support library.")
         (method url-fetch)
         (uri (pypi-uri "ply" version))
         (sha256
-          (base32
-            "18qx113g9bi1ac4indd5phma82zcdq601lxncp3vjn43m2mc3iq0"))))
-    (build-system python-build-system)
+          (base32 "18qx113g9bi1ac4indd5phma82zcdq601lxncp3vjn43m2mc3iq0"))))
+    (build-system pyproject-build-system)
+    (arguments (list #:tests? #f)) ;XXX: not tests in PyPI archvie, there are in Git
+    (native-inputs
+     (list python-setuptools
+           python-wheel))
     (home-page "http://www.dabeaz.com/ply/")
     (synopsis "Python Lex & Yacc")
     (description "PLY is a @code{lex}/@code{yacc} implemented purely in Python.