Western-style sci-fi is probably a good description; in any case I loved it. I think the film does a pretty perfect job of combining people with a unique situation, and I found it quite beautiful to be honest. Both the cinematography, and the characterisation. Music, also.
Also, I felt like there was a healthy firefly influence, in a wonderfully good way. Felt like it filled a bit of the gap that that show left, which doesn't happen all that often.