devel/py-curtsies: Convert to USE_PYTHON=pep517

- Remove outdated PYTHON_REL check after lang/python37 removal
- Bump PORTREVISION for package change

devel/py-curtsies/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	curtsies
 PORTVERSION=	0.4.1
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -11,19 +12,15 @@ WWW=		https://github.com/bpython/curtsies
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools>=43:devel/py-setuptools@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}wheel>=0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}blessed>=1.5:devel/py-blessed@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}cwcwidth>=0:devel/py-cwcwidth@${PY_FLAVOR}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pyte>=0:devel/py-pyte@${PY_FLAVOR}
 
 USES=		python
-USE_PYTHON=	autoplist concurrent distutils pytest
+USE_PYTHON=	autoplist concurrent pep517 pytest
 
 NO_ARCH=	yes
 
-.include <bsd.port.pre.mk>
-
-.if ${PYTHON_REL} < 30800
-RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}backports.cached-property>=0:devel/py-backports.cached-property@${PY_FLAVOR}
-.endif
-
-.include <bsd.port.post.mk>
+.include <bsd.port.mk>