Index: net-mgmt/blackbox_exporter/Makefile
===================================================================
--- net-mgmt/blackbox_exporter/Makefile	(revision 508920)
+++ net-mgmt/blackbox_exporter/Makefile	(working copy)
@@ -12,7 +12,8 @@
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		go
+USES=		go:modules
+
 USE_GITHUB=	yes
 GH_ACCOUNT=	prometheus
 USE_RC_SUBR=	blackbox_exporter
@@ -20,9 +21,6 @@
 USERS=		prometheus
 GROUPS=		prometheus
 
-GO_PKGNAME=	github.com/${GH_ACCOUNT}/${PORTNAME}
-GO_TARGET=	github.com/${GH_ACCOUNT}/${PORTNAME}
-
 PORTEXAMPLES=	${WRKSRC}/*.yml
 
 OPTIONS_DEFINE=	EXAMPLES
@@ -33,8 +31,7 @@
 		${EXAMPLESDIR}/blackbox.yml \
 		${EXAMPLESDIR}/example.yml
 
-do-install:
-	${INSTALL_PROGRAM} ${WRKDIR}/bin/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
+post-install:
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	${INSTALL_DATA} ${WRKSRC}/*.yml ${STAGEDIR}${EXAMPLESDIR}