diff -ur duplicity-devel.orig/Makefile duplicity-devel/Makefile
--- duplicity-devel.orig/Makefile	2020-01-28 13:52:53.000000000 +0000
+++ duplicity-devel/Makefile	2020-02-10 00:29:31.402903000 +0000
@@ -3,6 +3,7 @@
 
 PORTNAME=	duplicity
 PORTVERSION=	0.8.10
+PORTREVISION=   1
 DISTVERSIONSUFFIX=	fin1558
 CATEGORIES=	sysutils
 MASTER_SITES=	https://code.launchpad.net/duplicity/0.8-series/${PORTVERSION}/+download/
@@ -33,11 +34,11 @@
 
 PORTDOCS=	CHANGELOG COPYING README README-REPO README-LOG
 
-OPTIONS_DEFINE=		DOCS FTP FTPS GDOCS GIO NLS S3
+OPTIONS_DEFINE=		DOCS FTP FTPS GDOCS GIO NLS S3 B2
 OPTIONS_GROUP=		GPG
 OPTIONS_SINGLE=		GPG
 OPTIONS_SINGLE_GPG=	GNUPG GNUPG2
-OPTIONS_DEFAULT=	FTP FTPS GNUPG2 S3
+OPTIONS_DEFAULT=	FTP FTPS GNUPG2 S3 B2
 FTP_DESC=		FTP backend
 FTPS_DESC=		FTPS backend
 GDOCS_DESC=		Google Docs backend
@@ -46,6 +47,7 @@
 GNUPG_DESC=		Use GnuPG 1
 GNUPG2_DESC=		Use GnuPG 2
 S3_DESC=		Amazon S3 backend
+B2_DESC=		Backblaze B2 backend
 
 FTP_RUN_DEPENDS=	ncftp>=3.2.2:ftp/ncftp3
 FTPS_RUN_DEPENDS=	lftp>=3.7.15:ftp/lftp
@@ -56,6 +58,7 @@
 GNUPG2_RUN_DEPENDS=	gpg2:security/gnupg
 NLS_USES=		gettext
 S3_RUN_DEPENDS=		${PYTHON_PKGNAMEPREFIX}boto>=1.6b:devel/py-boto@${PY_FLAVOR}
+B2_RUN_DEPENDS=		${PYTHON_PKGNAMEPREFIX}b2sdk>=0.1.8:devel/py-b2sdk@${PY_FLAVOR}
 
 post-patch:
 .for f in cfbackend _cf_cloudfiles _cf_pyrax
@@ -82,6 +85,9 @@
 
 post-patch-GIO-off:
 	@${RM} ${WRKSRC}/${PORTNAME}/backends/giobackend.py
+
+post-patch-B2-off:
+	@${RM} ${WRKSRC}/${PORTNAME}/backends/b2backend.py
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/duplicity/_librsync.so