The sensible thing to do for the Moon, and then Mars, is to send a nuclear powered, horizontal shaft mining robot. From that point, all missions are cumulative.
When people are not there, it continues to dig horizontal tunnels to make a tunnel system for future expansion.
When they are there, they have a habitat and abundant energy. They are out of the vacuum, cosmic and enhanced radiation, extremes of heat and cold, and very abrasive lunar dust.
Because the tunneling robot is on a one way mission, its lander can be designed to be cannibalized for pressure doors, reinforcing rod, roof, walls and flooring. Once the robot has tunneled, it can insert reinforcing rod in the ceiling and spray the inside of the tunnel with sealant against micro fissures.
Even if it just tunnels one inch a day, in a year the tunnel would be over 30 feet long. Once it installs the pressure doors, it could even pressurize and heat the tunnel to see how long it retains pressure and heat.
One other benefit is that because astronauts would not have to bring a long term habitat, they could devote much more room and weight to supplies and equipment. Missions could be much longer and far more could be done in each mission. When they leave, the tunneling robot would continue to expand the tunnel system, so visits could last longer and longer.
Tunneling machines have been around for quite a while and some of them are pretty amazing. The USAF uses such machines for its underground installations, and even the US Navy has considered using them to build undersea installations.
One designed to work in a vacuum on the Moon or Mars would be considerably smaller because of cargo lift limits, but that would not be a problem given its extended work cycle.
It would likely start inside a crater, as that would give more even day and night temperatures.
Something like a conveyor belt beneath it and running far behind it, so as it slowly cut into the rock, it would be conveyed outside the tunnel. Much of its operations on the Moon would be directed from Earth.
As a bonus, when people arrived, its nuclear power source could provide ample energy for their habitat, so they would need less fuel.
I aasume you meant this to be sarcasm and forgot the tag?