tree f1963d0a9bee702b82ed811cc79d6db77a452740
parent 0c1e55817e752cc9094b07608dbacfdb4a9bfa8a
author Bryan C. Mills <bcmills@google.com> 1552586948 -0400
committer Bryan C. Mills <bcmills@google.com> 1552593958 +0000

all: add go.mod

Copy golang.org/x/build/envutil.Dedup locally to avoid pulling in all
of x/build.

Commands run:
	go mod init
	go mod edit -go=1.11
	go mod tidy
	go list -m all
	go test ./...

Updates golang/go#30228

Change-Id: I0fc24565c08a73db067daf080b46f4aa82a63c41
Reviewed-on: https://go-review.googlesource.com/c/dl/+/167703
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>