MattWithoos [1] filed a deletion request for oculus-rift-sdk [2]: Remove this, it's not supported by Facebook, and hasn't been for ages. Allegedly you can download the sdk manually, but not programatically, as it's session/key based, so it won't be available to a package manager to download.
[1] https://aur.archlinux.org/account/MattWithoos/ [2] https://aur.archlinux.org/pkgbase/oculus-rift-sdk/
