{ config, lib, pkgs, ... }: with lib; let cfg = config.security.polkit; in { options = { security.polkit.enable = mkOption { type = types.bool; default = true; description = "Whether to enable PolKit."; }; security.polkit.extraConfig = mkOption { type = types.lines; default = ""; example = '' /* Log authorization checks. */ polkit.addRule(function(action, subject) { polkit.log("user " + subject.user + " is attempting action " + action.id + " from PID " + subject.pid); }); /* Allow any local user to do anything (dangerous!). */ polkit.addRule(function(action, subject) { if (subject.local) return "yes"; }); ''; description = '' Any polkit rules to be added to config (in JavaScript ;-). See: http://www.freedesktop.org/software/polkit/docs/latest/polkit.8.html#polkit-rules ''; }; security.polkit.adminIdentities = mkOption { type = types.listOf types.str; default = [ "unix-user:0" "unix-group:wheel" ]; example = [ "unix-user:alice" "unix-group:admin" ]; description = '' Specifies which users are considered “administrators”, for those actions that require the user to authenticate as an administrator (i.e. have an <literal>auth_admin</literal> value). By default, this is the <literal>root</literal> user and all users in the <literal>wheel</literal> group. ''; }; }; config = mkIf cfg.enable { environment.systemPackages = [ pkgs.polkit.bin pkgs.polkit.out ]; systemd.packages = [ pkgs.polkit.out ]; systemd.services.polkit.restartTriggers = [ config.system.path ]; systemd.services.polkit.stopIfChanged = false; # The polkit daemon reads action/rule files environment.pathsToLink = [ "/share/polkit-1" ]; # PolKit rules for NixOS. environment.etc."polkit-1/rules.d/10-nixos.rules".text = '' polkit.addAdminRule(function(action, subject) { return [${concatStringsSep ", " (map (i: "\"${i}\"") cfg.adminIdentities)}]; }); ${cfg.extraConfig} ''; #TODO: validation on compilation (at least against typos) services.dbus.packages = [ pkgs.polkit.out ]; security.pam.services.polkit-1 = {}; security.wrappers = { pkexec.source = "${pkgs.polkit.bin}/bin/pkexec"; "polkit-agent-helper-1".source = "${pkgs.polkit.out}/lib/polkit-1/polkit-agent-helper-1"; }; systemd.tmpfiles.rules = [ # Probably no more needed, clean up "R /var/lib/polkit-1" "R /var/lib/PolicyKit" ]; users.users.polkituser = { description = "PolKit daemon"; uid = config.ids.uids.polkituser; }; }; }