ID this drought resistant tree - Australian (aka Tasmanian) blackwood, Acacia melanoxylon

Any ideas, fast growing, possibly nitrogen fixer

Picture this app ID'd it straight away as australian blackwood

Yep. Australian (aka Tasmanian) blackwood,  Acacia melanoxylon. I love this tree in my climate. Grows quickly and with straight boles if planted closely. Dense, high quality timber, excellent for cabinetwork and joinery. Also one of the best firewood species I've come across - right up there with mesquite. N fixer, bees and native nectar-feeding birds like the flowers, and my chickens will forage the seeds. Seems to play nicely with other trees in mixed settings, but is prone to sending up lots of root suckers. If you want lots of trees, the suckering is good because you can dig them up and plant them out with a pretty decent success rate. Haven't tried coppicing it, but it does not seem to mind being pruned hard or shorn to keep it small, and by doing this you induce root mass reduction which gives up some of the nitrogen to the surrounding soil.

I give it a double thumbs up from a permie perspective.