display_error() {
	tput sgr0
	tput setaf 1
	echo "ERROR: $1" >&2
	tput sgr0
	return 1
}

function gvm_pkgset_use() {
	[[ "$1" != "" ]] ||
		display_error "Please specify a package set" || return 1

	[[ "$gvm_go_name" != "" ]] || 
		display_error "No Go version selected" || return 1

	fuzzy_match=`ls $GVM_ROOT/environments | sort | grep "$gvm_go_name@" | grep "$1" | head -n 1` ||
		display_error "Invalid package set" || return 1

	. "$GVM_ROOT/environments/$fuzzy_match" ||
		display_error "Failed to source the package set environment" || return 1

	echo "Now using version $fuzzy_match"
}