audio/py-soxr: Add workaround to fix wrong version variable

audio/py-soxr/Makefile

@@ -1,5 +1,6 @@
 PORTNAME=	soxr
 DISTVERSION=	0.3.6
+PORTREVISION=	1
 CATEGORIES=	audio python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
@@ -13,7 +14,8 @@ LICENSE_COMB=	multi
 
 BROKEN_i386=	fails to compile: ...requires target feature 'sse', but would be inlined into function 'h8' that is compiled without support for 'sse'
 
-BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools_scm>0:devel/py-setuptools_scm@${PY_FLAVOR} \
+BUILD_DEPENDS=	${PY_SETUPTOOLS} \
+		${PYTHON_PKGNAMEPREFIX}setuptools_scm>0:devel/py-setuptools_scm@${PY_FLAVOR} \
 		${PYNUMPY} \
 		${PKGNAMEPREFIX}wheel>0:devel/py-wheel@${PY_FLAVOR}
 RUN_DEPENDS=	${PYNUMPY}
@@ -24,6 +26,9 @@ USE_PYTHON=	pep517 cython autoplist pytest
 TEST_ENV=	${MAKE_ENV} PYTHONPATH=${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}
 
 post-install:
+	# strip binary
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/soxr/cysoxr${PYTHON_EXT_SUFFIX}.so
+	# correct version as a workaround for https://github.com/dofuuz/python-soxr/issues/21
+	@${REINPLACE_CMD} -i '' -e 's|^version |__version__ |' ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/soxr/_version.py
 
 .include <bsd.port.mk>