Add scanning with unstable brscan5

flake.nix

@@ -27,7 +27,7 @@
         rec {
           specialArgs = {
             inherit inputs;
-            pkgs-unstable = nixpkgs-unstable.legacyPackages."${conf.system}";
+            pkgs-unstable = import nixpkgs-unstable { config.allowUnfree = true; system = conf.system; };
           };
           modules = [
             private.nixosModules.base

sets/workstation.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, pkgs-unstable, ... }:
 
 {
   imports = [
@@ -34,5 +34,17 @@
     bluetooth.enable = true;
     opengl.driSupport32Bit = (pkgs.system == "x86_64-linux");
     steam-hardware.enable = true;
+    sane = {
+      enable = true;
+      brscan5.enable = true;
+    };
   };
+
+  nixpkgs.overlays = [
+    (final: prev: {
+      brscan5 = pkgs-unstable.brscan5;
+    })
+  ];
+
+  users.users.artemis.extraGroups = [ "scanner" ];
 }