I’m having the same issue! Using NixOS with ZFS as my host (and since NixOS’s philisophy is unsupported as per Latest Roon Server is not available for download on NixOS - #12 by Bernardo_Meurer_Cost - I run it in a ubuntu docker image)
Looking forward to a resolution to this, since I can’t really use 1.8 until it can load my music 
Nice to see someone else loves music and NixOS @Bernardo_Meurer_Cost