Airspy is an SDR with amazing specs, but drivers are slowly coming to your prefered os.
This apply to Arch but should apply to any recent Linux.
I’ve first compiled libairspy but always had the error
"usbfs: interface 0 claimed by airspy while 'airspy_info' sets config #1"
Since Linux 3.17 comes with an airspy v4l autoloaded driver making impossible to use it with libusb: no airspy_info and no gqrx.
Simply get rid of it with a modprobe config like /etc/modprobe.d/airspy.conf
You need some deps: the airspy lib, gnuradio-osmosdr (gr-osmosdr) and a recent gqrx
Here are [my Arch AUR pkg](https://drive.google.com/file/d/0B4clDbhSrtODR2xNV0 lsWEVud00/view?usp=sharing) that will build airspy-git, gr-osmosdr-git and gqrx-git (note that you need to uninstall the packages from community to avoid conflict).