Script to update your GOPATH when working with multiple workspaces.

goenv.sh

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

#/ Usage:       source ./goenv.sh
#/ Description: Adjusts GOPATH environment variable to support multiple workspaces.
#/              Inspired by https://github.com/dgnorton/goenv/blob/master/goenv.sh
#/ Options:
#/   --help: Display this help message
usage() { grep '^#/' "$0" | cut -c4- ; exit 0 ; }
expr "$*" : ".*--help" > /dev/null && usage

DEFAULT_GOPATH="${HOME}/go"

c=$(pwd)/dummy
while :
do
	d=$(basename $(dirname $c))
	if [ "$d" == "/" ]; then
		echo not a valid GOPATH
		break
	elif [ "$d" == "workspace" ]; then
    WORKSPACE=$(dirname $c)
		export GOPATH="${WORKSPACE}:${DEFAULT_GOPATH}"
		echo "GOPATH set to ${GOPATH}"
		break
	else
		c=$(dirname $c)
	fi
done