140 lines
5 KiB
Nix
140 lines
5 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
with lib;
|
|
let
|
|
cfg = config.hardware.printers;
|
|
|
|
ensurePrinter = p: let
|
|
args = cli.toGNUCommandLineShell {} ({
|
|
p = p.name;
|
|
v = p.deviceUri;
|
|
m = p.model;
|
|
} // optionalAttrs (p.location != null) {
|
|
L = p.location;
|
|
} // optionalAttrs (p.description != null) {
|
|
D = p.description;
|
|
} // optionalAttrs (p.ppdOptions != {}) {
|
|
o = mapAttrsToList (name: value: "'${name}'='${value}'") p.ppdOptions;
|
|
});
|
|
in ''
|
|
${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: all (c: c != "#" && c != "/") (stringToCharacters str);
|
|
printerName = (types.addCheck (types.strMatching "[[:graph:]]+") noInvalidChars)
|
|
// { description = "printable string without spaces, # and /"; };
|
|
|
|
|
|
in {
|
|
options = {
|
|
hardware.printers = {
|
|
ensureDefaultPrinter = mkOption {
|
|
type = types.nullOr printerName;
|
|
default = null;
|
|
description = lib.mdDoc ''
|
|
Ensures the named printer is the default CUPS printer / printer queue.
|
|
'';
|
|
};
|
|
ensurePrinters = mkOption {
|
|
description = lib.mdDoc ''
|
|
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 = types.listOf (types.submodule {
|
|
options = {
|
|
name = mkOption {
|
|
type = printerName;
|
|
example = "BrotherHL_Workroom";
|
|
description = lib.mdDoc ''
|
|
Name of the printer / printer queue.
|
|
May contain any printable characters except "/", "#", and space.
|
|
'';
|
|
};
|
|
location = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
example = "Workroom";
|
|
description = lib.mdDoc ''
|
|
Optional human-readable location.
|
|
'';
|
|
};
|
|
description = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
example = "Brother HL-5140";
|
|
description = lib.mdDoc ''
|
|
Optional human-readable description.
|
|
'';
|
|
};
|
|
deviceUri = mkOption {
|
|
type = types.str;
|
|
example = literalExpression ''
|
|
"ipp://printserver.local/printers/BrotherHL_Workroom"
|
|
"usb://HP/DESKJET%20940C?serial=CN16E6C364BH"
|
|
'';
|
|
description = lib.mdDoc ''
|
|
How to reach the printer.
|
|
{command}`lpinfo -v` shows a list of supported device URIs and schemes.
|
|
'';
|
|
};
|
|
model = mkOption {
|
|
type = types.str;
|
|
example = literalExpression ''
|
|
"gutenprint.''${lib.versions.majorMinor (lib.getVersion pkgs.gutenprint)}://brother-hl-5140/expert"
|
|
'';
|
|
description = lib.mdDoc ''
|
|
Location of the ppd driver file for the printer.
|
|
{command}`lpinfo -m` shows a list of supported models.
|
|
'';
|
|
};
|
|
ppdOptions = mkOption {
|
|
type = types.attrsOf types.str;
|
|
example = {
|
|
PageSize = "A4";
|
|
Duplex = "DuplexNoTumble";
|
|
};
|
|
default = {};
|
|
description = lib.mdDoc ''
|
|
Sets PPD options for the printer.
|
|
{command}`lpoptions [-p printername] -l` shows supported PPD options for the given printer.
|
|
'';
|
|
};
|
|
};
|
|
});
|
|
};
|
|
};
|
|
};
|
|
|
|
config = 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 = 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")
|
|
];
|
|
};
|
|
};
|
|
}
|