Something went wrong. Try again.
What happens if I push all of nixpkgs
Something went wrong. Try again.
Nix
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159{ config, lib, pkgs, ...}:let cfg = config.hardware.printers;
ensurePrinter = p: let args = lib.cli.toGNUCommandLineShell { } ( { p = p.name; v = p.deviceUri; m = p.model; } // lib.optionalAttrs (p.location != null) { L = p.location; } // lib.optionalAttrs (p.description != null) { D = p.description; } // lib.optionalAttrs (p.ppdOptions != { }) { o = lib.mapAttrsToList (name: value: "${name}=${value}") p.ppdOptions; } ); in '' # shellcheck disable=SC2016 ${pkgs.cups}/bin/lpadmin ${args} -E '';
ensureDefaultPrinter = name: '' ${pkgs.cups}/bin/lpadmin -d '${name}' '';
# "graph but not # or /" can't be implemented as regex alone due to missing lookahead support noInvalidChars = str: lib.all (c: c != "#" && c != "/") (lib.stringToCharacters str); printerName = (lib.types.addCheck (lib.types.strMatching "[[:graph:]]+") noInvalidChars) // { description = "printable string without spaces, # and /"; };
in{ options = { hardware.printers = { ensureDefaultPrinter = lib.mkOption { type = lib.types.nullOr printerName; default = null; description = '' Ensures the named printer is the default CUPS printer / printer queue. ''; }; ensurePrinters = lib.mkOption { description = '' Will regularly ensure that the given CUPS printers are configured as declared here. If a printer's options are manually changed afterwards, they will be overwritten eventually. This option will never delete any printer, even if removed from this list. You can check existing printers with {command}`lpstat -s` and remove printers with {command}`lpadmin -x <printer-name>`. Printers not listed here can still be manually configured. ''; default = [ ]; type = lib.types.listOf ( lib.types.submodule { options = { name = lib.mkOption { type = printerName; example = "BrotherHL_Workroom"; description = '' Name of the printer / printer queue. May contain any printable characters except "/", "#", and space. ''; }; location = lib.mkOption { type = lib.types.nullOr lib.types.str; default = null; example = "Workroom"; description = '' Optional human-readable location. ''; }; description = lib.mkOption { type = lib.types.nullOr lib.types.str; default = null; example = "Brother HL-5140"; description = '' Optional human-readable description. ''; }; deviceUri = lib.mkOption { type = lib.types.str; example = lib.literalExpression '' "ipp://printserver.local/printers/BrotherHL_Workroom" "usb://HP/DESKJET%20940C?serial=CN16E6C364BH" ''; description = '' How to reach the printer. {command}`lpinfo -v` shows a list of supported device URIs and schemes. ''; }; model = lib.mkOption { type = lib.types.str; example = lib.literalExpression '' "gutenprint.''${lib.versions.majorMinor (lib.getVersion pkgs.gutenprint)}://brother-hl-5140/expert" ''; description = '' Location of the ppd driver file for the printer. {command}`lpinfo -m` shows a list of supported models. ''; }; ppdOptions = lib.mkOption { type = lib.types.attrsOf lib.types.str; example = { PageSize = "A4"; Duplex = "DuplexNoTumble"; }; default = { }; description = '' Sets PPD options for the printer. {command}`lpoptions [-p printername] -l` shows supported PPD options for the given printer. ''; }; }; } ); }; }; };
config = lib.mkIf (cfg.ensurePrinters != [ ] && config.services.printing.enable) { systemd.services.ensure-printers = { description = "Ensure NixOS-configured CUPS printers"; wantedBy = [ "multi-user.target" ]; wants = [ "cups.service" ]; after = [ "cups.service" ];
serviceConfig = { Type = "oneshot"; RemainAfterExit = true; };
script = lib.concatStringsSep "\n" [ (lib.concatMapStrings ensurePrinter cfg.ensurePrinters) (lib.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. (lib.optionalString ( with config.services.printing; startWhenNeeded && !stateless ) "systemctl stop cups.service") ]; }; };}