textproc/py-sphinx-tabs: Convert to USE_PYTHON=pep517

- Bump PORTREVISION for package change

textproc/py-sphinx-tabs/Makefile

 PORTNAME=	sphinx-tabs
 PORTVERSION=	3.4.1
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	textproc python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -12,6 +12,8 @@ WWW=		https://github.com/executablebooks/sphinx-tabs
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=0:devel/py-setuptools@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}docutils>=0.18.0,1<0.20.0,1:textproc/py-docutils@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pygments>=0:textproc/py-pygments@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}sphinx>=0,1:textproc/py-sphinx@${PY_FLAVOR}
@@ -19,7 +21,7 @@ TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}docutils>=0,1:textproc/py-docutils@${PY_FLA
 		${PYTHON_PKGNAMEPREFIX}lxml>=0:devel/py-lxml@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist concurrent distutils
+USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes