MattWithoos  filed a deletion request for oculus-rift-sdk :
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.
 https://aur.archlinux.org/account/MattWithoos/  https://aur.archlinux.org/pkgbase/oculus-rift-sdk/
Request #22074 has been accepted by Foxboron .