NixOS/nixpkgs — pull request #5036 by abbradar (2014-11-18 14:55:10+00:00)
Title: sane: fix multifunctional devices rights conflict with cups

Another part of https://github.com/NixOS/nixpkgs/pull/4857 -- this makes MFDs work both with cups and sane. Without this they were being assigned to 'scanner' group, which prevented CUPS from working with them at all. This is how it's fixed on Arch Linux IIRC. Tested.