Activate a virtualenv for current directory

vba.sh

# zsh <3
vba() {
	local venv
	local base="."
	
	while :; do
		venv=($base/venv*/bin/activate(N))
		if [ $#venv = 1 ]; then
			source $venv
			return 0
		fi

		if [ $(readlink -f $base) = "/" ]; then
			return 1
		fi
		base="$base/.."
	done
}