[Thiz]

Can I use it on my old mac mini 2011 with 2gb ram and Mavericks?

I really want to start using Swift. And no, can't upgrade.

[slm_HN]

I doubt it. The last version of XCode 6 won't run without Yosemite, so I'm guessing 7 will require Yosemite.

Also it's very hard to run with 2gb ram. For example you won't be able to use the iOS emulator because the swapping will take so long XCode will timeout when trying to launch the emulator. It's very painful even with 4gb. 8 is probably the minimum.

[donarb]

It's a simulator, not an emulator. There's a big difference.

[sjwright]

You say you can't upgrade the computer, but surely you could throw some extra memory in. You could increase it to 8GB for around US$60 and benefit from a substantial improvement in performance across the board.

[72deluxe]

Ouch. 2GB RAM? Sleeping and resuming must be really fast (no large capacity of RAM to save to disk) but daily running must be painful.

[cerberusss]

If it's just Swift, perhaps you can try and install the command-line developer tools?