Silence "Found more than one possible libdrm data directory from provider" on NixOS
Side issue from https://github.com/ValveSoftware/Dota-2/issues/2406.
A NixOS user's log says:
13:24:48.740104: pressure-vessel-wrap[54736]: W: Found more than one possible libdrm data directory from provider
If all the possible libdrm data directories start with /nix
(or /gnu/store
) then we don't need to do anything special to make all of them available in the container, so we can suppress this warning, and perhaps also suppress creation of the /usr/share/libdrm
symlink pointing to an arbitrarily-chosen one of them.