www/py-feedgenerator: Convert to USE_PYTHON=pep517

- Bump PORTREVISION for package change

www/py-feedgenerator/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	feedgenerator
 PORTVERSION=	2.1.0
+PORTREVISION=	1
 CATEGORIES=	www python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -11,10 +12,12 @@ WWW=		https://github.com/getpelican/feedgenerator
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=40.6.0:devel/py-setuptools@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytz>=0,1:devel/py-pytz@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist concurrent distutils unittest
+USE_PYTHON=	autoplist concurrent pep517 unittest
 
 NO_ARCH=	yes