diff --git a/nixos/modules/hardware/printers.nix b/nixos/modules/hardware/printers.nix index 64c29bb0a5b3..a8211b8c17cd 100644 --- a/nixos/modules/hardware/printers.nix +++ b/nixos/modules/hardware/printers.nix @@ -110,21 +110,26 @@ in { }; config = mkIf (cfg.ensurePrinters != [] && config.services.printing.enable) { - systemd.services.ensure-printers = let - cupsUnit = if config.services.printing.startWhenNeeded then "cups.socket" else "cups.service"; - in { + systemd.services.ensure-printers = { description = "Ensure NixOS-configured CUPS printers"; wantedBy = [ "multi-user.target" ]; - requires = [ cupsUnit ]; - after = [ cupsUnit ]; + wants = [ "cups.service" ]; + after = [ "cups.service" ]; serviceConfig = { Type = "oneshot"; RemainAfterExit = true; }; - script = concatMapStringsSep "\n" ensurePrinter cfg.ensurePrinters - + optionalString (cfg.ensureDefaultPrinter != null) (ensureDefaultPrinter cfg.ensureDefaultPrinter); + script = concatStringsSep "\n" [ + (concatMapStrings ensurePrinter cfg.ensurePrinters) + (optionalString (cfg.ensureDefaultPrinter != null) + (ensureDefaultPrinter cfg.ensureDefaultPrinter)) + # Note: if cupsd is "stateless" the service can't be stopped, + # otherwise the configuration will be wiped on the next start. + (optionalString (with config.services.printing; startWhenNeeded && !stateless) + "systemctl stop cups.service") + ]; }; }; }