Change to a PEP 517 based workflow

PKGBUILD

@@ -10,7 +10,12 @@ arch=(any)
 url="https://github.com/spyder-ide/qtpy/"
 license=(MIT)
 depends=(python-packaging)
-makedepends=(python-setuptools)
+makedepends=(
+    python-build
+    python-installer
+    python-setuptools
+    python-wheel
+)
 optdepends=('python-pyqt5: Qt5 Python bindings'
             'python-pyqt6: Qt6 Python bindings'
             'python-pyqt5-webengine: Qt5-WebEngine python bindings'
@@ -51,7 +56,7 @@ sha256sums=('e5f3ceaf3465b453f71cc0248fc85116ae5b3dfd76cbfd491409eb345a9f9df2')
 
 build() {
   cd ${_pkgname}-${pkgver}
-  python setup.py build
+  python -m build --wheel --no-isolation
 }
 
 check() {
@@ -62,6 +67,6 @@ check() {
 
 package() {
   cd ${_pkgname}-${pkgver}
-  python setup.py install --prefix=/usr --root="${pkgdir}" --optimize=1 --skip-build
+  python -m installer --destdir="$pkgdir" dist/*.whl
   install -Dm644 LICENSE.txt -t "${pkgdir}"/usr/share/licenses/${pkgname}/
 }