sysutils/py-filelock: Fix version in installed PKG-INFO files

Before this version was set to 0.0.0 which caused tox failure.

sysutils/py-filelock/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	filelock
 DISTVERSION=	3.4.2
+PORTREVISION=	1
 CATEGORIES=	sysutils python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -15,4 +16,7 @@ USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
 
+post-patch: # workaround for https://github.com/tox-dev/py-filelock/issues/133
+	@${REINPLACE_CMD} -e 's|author = Benedikt Schmitt|version = ${PORTVERSION}|' ${WRKSRC}/setup.cfg
+
 .include <bsd.port.mk>