nixos/pcscd: Correctly install pcsclite (fix #121121)

This makes sure that the polkit policies for pcsclite are correcly loaded.

Changed files
+1
nixos
modules
services
hardware
+1
nixos/modules/services/hardware/pcscd.nix
···
environment.etc."reader.conf".source = cfgFile;
+
environment.systemPackages = [ pkgs.pcsclite ];
systemd.packages = [ (getBin pkgs.pcsclite) ];
systemd.sockets.pcscd.wantedBy = [ "sockets.target" ];