Like python virtualenv for go.

goworkspaces.sh

GO_WORKSPACE=${GO_WORKSPACE:-~/Documents/work/goworkspace}

mkdir -p $GO_WORKSPACE
goworkon() {
    PROJECT=$1
    PROJECT_DIR="${GO_WORKSPACE}/${PROJECT}"
    if [[ ! -d "$PROJECT_DIR" ]]; then
        echo "Project does not exist!"
        return 1
    fi

    export GOPATH=$PROJECT_DIR
    export GOBIN="${PROJECT_DIR}/bin"

    cd $PROJECT_DIR
    cd "$(readlink ./link)"
}

gocreateproject() {
    GITHUB=$1
    GITHUB_PATH=github.com/${GITHUB#*:}
    PROJECT=${GITHUB##*/}
    PROJECT_DIR="${GO_WORKSPACE}/${PROJECT}"

    if [[ -d "$PROJECT_DIR" ]]; then
        echo "Project alread exists!"
        return 1
    fi

    mkdir -p "${PROJECT_DIR}/src"

    cd ${PROJECT_DIR}
    git clone "${GITHUB}.git" "src/${GITHUB_PATH}" || return 1

    ln -snf "src/${GITHUB_PATH}" link

    goworkon "$PROJECT"
}

func _goworkon() {
    reply=( `cd "$GO_WORKSPACE"; ls` )
}

compctl -K _goworkon goworkon