//	GOPROXY
//		URL of Go module proxy. See https://golang.org/ref/mod#environment-variables
//		and https://golang.org/ref/mod#module-proxy for details.
//	GOPRIVATE, GONOPROXY, GONOSUMDB
//		Comma-separated list of glob patterns (in the syntax of Go's path.Match)
//		of module path prefixes that should always be fetched directly
//		or that should not be compared against the checksum database.