Index: head/Mk/Uses/go.mk
===================================================================
--- head/Mk/Uses/go.mk	(revision 566510)
+++ head/Mk/Uses/go.mk	(revision 566511)
@@ -1,253 +1,253 @@
 # $FreeBSD$
 #
 # This file contains logic to ease porting of Go binaries using the
 # `go` command.
 #
 # Feature:	go
 # Usage:	USES=go
 # Valid ARGS:	(none), modules, no_targets, run
 #
 # (none)	Setup GOPATH and build in GOPATH mode.
 # modules	If the upstream uses Go modules, this can be set to build
 #		in modules-aware mode.
 # no_targets	Indicates that Go is needed at build time as a part of
 #		make/CMake build.  This will setup build environment like
 #		GO_ENV, GO_BUILDFLAGS but will not create post-extract and
 #		do-{build,install,test} targets.
 # run		Indicates that Go is needed at run time and adds it to
 #		RUN_DEPENDS.
 #
 # You can set the following variables to control the process.
 #
 # GO_MODULE
 #	The name of the module as specified by "module" directive in go.mod.
 #	In most cases, this is the only requred variable for ports that
 #	use Go modules.
 #
 # GO_PKGNAME
 #	The name of the package when building in GOPATH mode.  This
 #	is the directory that will be created in ${GOPATH}/src.  If not set
 #	explicitly and GH_SUBDIR or GL_SUBDIR is present, GO_PKGNAME will
 #	be inferred from it.
 #	It is not needed when building in modules-aware mode.
 #
 # GO_TARGET
 #	The packages to build.  The default value is ${GO_PKGNAME}.
 #	GO_TARGET can also be a tuple in the form package:path where path can be
 #	either a simple filename or a full path starting with ${PREFIX}.
 #
 # GO_TESTTARGET
 #	The packages to test. The default value is `./...` (the current package
 #	and all subpackages).
 #
 # CGO_CFLAGS
 #	Additional CFLAGS variables to be passed to the C compiler by the `go`
 #	command
 #
 # CGO_LDFLAGS
 #	Additional LDFLAGS variables to be passed to the C compiler by the `go`
 #	command
 #
 # GO_BUILDFLAGS
 #	Additional build arguments to be passed to the `go build` command
 #
 # GO_TESTFLAGS
 #	Additional build arguments to be passed to the `go test` command
 #
 # GO_PORT
 #	The Go port to use.  By default this is lang/go but can be set
 #	to lang/go-devel in make.conf for testing with future Go versions.
 #
 #	This variable must not be set by individual ports!
 #
 # MAINTAINER: dmgk@FreeBSD.org
 
 .if !defined(_INCLUDE_USES_GO_MK)
 _INCLUDE_USES_GO_MK=	yes
 
 .if !empty(go_ARGS:Nmodules:Nno_targets:Nrun)
 IGNORE=	USES=go has invalid arguments: ${go_ARGS:Nmodules:Nno_targets:Nrun}
 .endif
 
 # Settable variables
 
 .if empty(GO_PKGNAME)
 .  if !empty(GH_SUBDIR)
 GO_PKGNAME=	${GH_SUBDIR:S|^src/||}
 .  elif !empty(GL_SUBDIR)
 GO_PKGNAME=	${GL_SUBDIR:S|^src/||}
 .  else
 GO_PKGNAME=	${PORTNAME}
 .  endif
 .endif
 
 GO_TARGET?=	${GO_PKGNAME}
 GO_TESTTARGET?=	./...
 
 GO_BUILDFLAGS+=	-v -buildmode=exe
 .if !defined(WITH_DEBUG) && empty(GO_BUILDFLAGS:M-ldflags*)
 GO_BUILDFLAGS+=	-ldflags=-s
 .endif
 GO_TESTFLAGS+=	-v
 
 CGO_ENABLED?=	1
 CGO_CFLAGS+=	-I${LOCALBASE}/include
 CGO_LDFLAGS+=	-L${LOCALBASE}/lib
 
 .if ${ARCH} == armv6 || ${ARCH} == armv7
 GOARM?=		${ARCH:C/armv//}
 .endif
 
 GO_GOPROXY?=	https://proxy.golang.org
 GO_GOSUMDB?=	sum.golang.org
 
 # Read-only variables
 
 GO_CMD=		${LOCALBASE}/bin/go
 GO_WRKDIR_BIN=	${WRKDIR}/bin
 GO_ENV+=	CGO_ENABLED=${CGO_ENABLED} \
 		CGO_CFLAGS="${CGO_CFLAGS}" \
 		CGO_LDFLAGS="${CGO_LDFLAGS}" \
 		GOARM=${GOARM}
 
 .if ${go_ARGS:Mmodules}
 GO_BUILDFLAGS+=	-mod=vendor
 GO_TESTFLAGS+=	-mod=vendor
 GO_GOPATH=	${DISTDIR}/go/${PKGORIGIN:S,/,_,g}
 GO_WRKSRC=	${WRKSRC}
 GO_ENV+=	GOPATH="${GO_GOPATH}" \
 		GOBIN="${GO_WRKDIR_BIN}" \
 		GO111MODULE=on \
 		GOFLAGS=-modcacherw \
 		GOSUMDB=${GO_GOSUMDB}
 .  if defined(GO_MODULE)
 GO_MODNAME=	${GO_MODULE:C/^([^@]*)(@([^@]*)?)/\1/}
 GO_MODVERSION=	${GO_MODULE:C/^([^@]*)(@([^@]*)?)/\2/:M@*:S/^@//:S/^$/${DISTVERSIONFULL}/}
 GO_MODFILE=	${GO_MODVERSION}.mod
 GO_DISTFILE=	${GO_MODVERSION}.zip
 DIST_SUBDIR=	go/${PKGORIGIN:S,/,_,g}/${DISTNAME}
-MASTER_SITES=	${GO_GOPROXY}/${GO_MODNAME}/@v/
+MASTER_SITES=	${GO_GOPROXY}/${GO_MODNAME:C/([A-Z])/!\1/g:tl}/@v/
 DISTFILES=	${GO_MODFILE} ${GO_DISTFILE}
 EXTRACT_ONLY=	${GO_DISTFILE}
 WRKSRC=		${WRKDIR}/${GO_MODNAME}@${GO_MODVERSION}
 FETCH_DEPENDS+=	${GO_CMD}:${GO_PORT} \
 		ca_root_nss>0:security/ca_root_nss
 USES+=		zip
 .  else
 GO_ENV+=	GO_NO_VENDOR_CHECKS=1
 .  endif
 .else
 GO_GOPATH=	${WRKDIR}
 GO_WRKSRC=	${WRKDIR}/src/${GO_PKGNAME}
 GO_ENV+=	GOPATH="${GO_GOPATH}" \
 		GOBIN="" \
 		GO111MODULE=off
 .endif
 
 GO_PORT?=	lang/go
 
 BUILD_DEPENDS+=	${GO_CMD}:${GO_PORT}
 .if ${go_ARGS:Mrun}
 RUN_DEPENDS+=	${GO_CMD}:${GO_PORT}
 .endif
 
 _USES_POST+=	go
 .endif # !defined(_INCLUDE_USES_GO_MK)
 
 .if defined(_POSTMKINCLUDED) && !defined(_INCLUDE_USES_GO_POST_MK)
 _INCLUDE_USES_GO_POST_MK=	yes
 
 .if !target(post-fetch) && ${go_ARGS:Mmodules} && defined(GO_MODULE)
 post-fetch:
 	@${ECHO_MSG} "===> Fetching ${GO_MODNAME} dependencies";
 	@(cd ${DISTDIR}/${DIST_SUBDIR}; \
 		[ -e go.mod ] || ${RLN} ${GO_MODFILE} go.mod; \
 		${SETENV} ${GO_ENV} GOPROXY=${GO_GOPROXY} ${GO_CMD} mod download -x)
 .endif
 
 .if !target(post-extract)
 .  if empty(go_ARGS)
 post-extract:
 	@${MKDIR} ${GO_WRKSRC:H}
 	@${LN} -sf ${WRKSRC} ${GO_WRKSRC}
 .  elif ${go_ARGS:Mmodules} && defined(GO_MODULE)
 post-extract:
 	@(cd ${GO_WRKSRC}; ${SETENV} ${GO_ENV} GOPROXY=off ${GO_CMD} mod vendor)
 .  endif 
 .endif
 
 .if !target(do-build) && empty(go_ARGS:Mno_targets)
 do-build:
 	(cd ${GO_WRKSRC}; \
 	for t in ${GO_TARGET}; do \
 		out=$$(${BASENAME} $$(${ECHO_CMD} $${t} | \
 			${SED} -Ee 's/^[^:]*:([^:]+).*$$/\1/' -e 's/^\.$$/${PORTNAME}/')); \
 		pkg=$$(${ECHO_CMD} $${t} | \
 			${SED} -Ee 's/^([^:]*).*$$/\1/' -e 's/^${PORTNAME}$$/./'); \
 		${ECHO_MSG} "===>  Building $${out} from $${pkg}"; \
 		${SETENV} ${MAKE_ENV} ${GO_ENV} GOPROXY=off ${GO_CMD} build ${GO_BUILDFLAGS} \
 			-o ${GO_WRKDIR_BIN}/$${out} \
 			$${pkg}; \
 	done)
 .endif
 
 .if !target(do-install) && empty(go_ARGS:Mno_targets)
 do-install:
 	for t in ${GO_TARGET}; do \
 		dst=$$(${ECHO_CMD} $${t} | \
 			${SED} -Ee 's/^[^:]*:([^:]+).*$$/\1/' -e 's/^\.$$/${PORTNAME}/'); \
 		src=$$(${BASENAME} $${dst}); \
 		case $${dst} in \
 			/*) dst=${STAGEDIR}$${dst}; ${MKDIR} $$(${DIRNAME} $${dst}) ;; \
 			 *) dst=${STAGEDIR}${PREFIX}/bin/$${src} ;; \
 		esac; \
 		${ECHO_MSG} "===>  Installing $${src} as $${dst}"; \
 		${INSTALL_PROGRAM} ${GO_WRKDIR_BIN}/$${src} $${dst}; \
 	done
 .endif
 
 .if !target(do-test) && empty(go_ARGS:Mno_targets)
 do-test:
 	(cd ${GO_WRKSRC}; \
 	for t in ${GO_TESTTARGET}; do \
 		${ECHO_MSG} "===>  Testing $${t}"; \
 		${SETENV} ${MAKE_ENV} ${GO_ENV} GOPROXY=off ${GO_CMD} test ${GO_TESTFLAGS} $${t}; \
 	done)
 .endif
 
 .if ${go_ARGS:Mmodules} && defined(GO_MODULE)
 gomod-clean:
 	@${ECHO_MSG} "===>  Cleaning Go module cache"
 	@${SETENV} ${GO_ENV} ${GO_CMD} clean -modcache
 
 # Hook up to distclean
 .if !target(post-clean) && !make(clean)
 post-clean: gomod-clean
 	@${RM} -r ${GO_GOPATH}
 .endif
 .endif
 
 # Helper targets for port maintainers
 
 .if ${go_ARGS:Mmodules} && !defined(GO_MODULE)
 _MODULES2TUPLE_CMD=	modules2tuple
 gomod-vendor-deps:
 	@if ! type ${GO_CMD} > /dev/null 2>&1; then \
 		${ECHO_MSG} "===> Please install \"${GO_PORT}\""; exit 1; \
 	fi; \
 	if ! type ${_MODULES2TUPLE_CMD} > /dev/null 2>&1; then \
 		${ECHO_MSG} "===> Please install \"ports-mgmt/modules2tuple\""; exit 1; \
 	fi
 
 gomod-vendor: gomod-vendor-deps patch
 	@cd ${WRKSRC}; ${SETENV} ${GO_ENV} ${GO_CMD} mod vendor; \
 	[ -r vendor/modules.txt ] && ${_MODULES2TUPLE_CMD} vendor/modules.txt
 
 gomod-vendor-diff: gomod-vendor-deps patch
 	@cd ${WRKSRC}; ${SETENV} ${GO_ENV} ${GO_CMD} mod vendor; \
 	[ -r vendor/modules.txt ] && ${_MODULES2TUPLE_CMD} vendor/modules.txt | ${SED} 's|GH_TUPLE=|	|; s| \\$$||' | ${GREP} -v '		\\' > ${WRKDIR}/GH_TUPLE-new.txt && \
 	echo ${GH_TUPLE} | ${TR} -s " " "\n" | ${SED} "s|^|		|" > ${WRKDIR}/GH_TUPLE-old.txt && \
 	${DIFF} ${WRKDIR}/GH_TUPLE-old.txt ${WRKDIR}/GH_TUPLE-new.txt || exit 0
 .endif
 
 .endif # defined(_POSTMKINCLUDED) && !defined(_INCLUDE_USES_GO_POST_MK)