libdrm.so is missing. Searching this Discord for that term specifically turns up nothing, and searching the web merely turns up almost nothing, but none of it helpful to solve this issue. So what is libdrm.so, why is it not present, and what can I do about it? I have found some very similarly-named files such as /usr/lib/libdrm.so.2 but I don't know if that's what SteamVR needs.