Bubble foam insulation is the way to go in deserts. This is where you pump a soap water foam in between gaps of greenhouse plastic. When you want to block light

Bubble foam insulation is the way to go in deserts. This is where you pump a soap water foam in between gaps of greenhouse plastic. When you want to block light/heat, fill that wall with foam. Drain to allow radiation. Water can be recuperated with an enthalpy wheel.