gnu: python-symengine: Use pyproject-build-system.

* gnu/packages/python-xyz.scm (python-symengine)[build-system]: Use
pyproject-build-system.
[arguments]<#:phases>: In the custom 'check' phase, run tests with
nose2.
[native-inputs]: Replace python-nose by python-nose2. Add
python-setuptools, python-wheel.

Change-Id: I73adbc3d6439b865001d65a6ea1d137815ce7192

gnu/packages/python-xyz.scm

@@ -20536,7 +20536,7 @@ document.")
        (uri (pypi-uri "symengine" version))
        (sha256
         (base32 "1w7hwavbxgikljy9m3p89k3x2zdhv81h9bh330aw4wb3qm74p7jf"))))
-    (build-system python-build-system)
+    (build-system pyproject-build-system)
     (arguments
      (list
       #:phases
@@ -20546,12 +20546,14 @@ document.")
               (if tests?
                   ;; Run tests against installed package.
                   (with-directory-excursion "/tmp"
-                    (invoke "nosetests" "-v" "symengine.tests"))
+                    (invoke "nose2" "-v" "symengine.tests"))
                   (format #t "test suite not run~%")))))))
-    (native-inputs
-     (list cmake-minimal python-cython-3 python-nose))
-    (inputs
-     (list symengine))
+    (native-inputs (list cmake-minimal
+                         python-cython-3
+                         python-nose2
+                         python-setuptools
+                         python-wheel))
+    (inputs (list symengine))
     (home-page "https://github.com/symengine/symengine.py")
     (synopsis "Python library providing wrappers to SymEngine")
     (description