Added printer setup

docs/printing.md

@@ -0,0 +1,187 @@
+Control dashboard: http://localhost:631
+
+---
+
+# 🧾 Core controls
+
+```bash
+lp file.pdf
+```
+
+```bash
+-d PRINTER        # choose printer
+-n NUM            # number of copies
+-t "TITLE"        # job name
+-q NUM            # priority (1–100, higher = sooner)
+```
+Printer at the house: `HP_OfficeJet_Pro_7740`. I can't make printing without USB work...
+
+---
+
+## If printer stuck:
+
+```bash id="enable1"
+sudo cupsenable HP_OfficeJet_Pro_7740
+```
+
+---
+
+
+```bash id="accept1"
+sudo cupsaccept HP_OfficeJet_Pro_7740
+```
+
+
+```bash id="cancel1"
+cancel -a HP_OfficeJet_Pro_7740
+```
+
+
+#### 🧪 Verify state
+
+```bash id="check1"
+lpstat -p -d
+```
+
+You want:
+
+```
+HP_OfficeJet_Pro_7740 idle, accepting jobs
+```
+
+---
+
+# 📄 Page selection
+
+```bash
+-P 1-5,8,10-20    # specific pages / ranges
+-o page-ranges=   # same as -P (sometimes more reliable)
+```
+
+Example:
+
+```bash
+lp -o page-ranges=142-184 file.pdf
+```
+
+---
+
+# 📐 Layout & scaling
+
+```bash
+-o fit-to-page
+-o scaling=100        # percent
+-o media=A4
+-o orientation-requested=4   # landscape
+```
+
+Orientation values:
+
+* `3` = portrait
+* `4` = landscape
+
+---
+
+# 🧠 Duplex (double-sided)
+
+```bash
+-o sides=one-sided
+-o sides=two-sided-long-edge
+-o sides=two-sided-short-edge
+```
+
+---
+
+# 📚 Multiple pages per sheet
+
+```bash
+-o number-up=2
+-o number-up=4
+-o number-up=6
+-o number-up=9
+-o number-up=16
+```
+
+---
+
+# 🖼️ Image handling
+
+```bash
+-o fit-to-page
+-o position=center
+-o saturation=100
+-o brightness=100
+```
+
+---
+
+# 🎨 Color / quality
+
+```bash
+-o ColorModel=Color
+-o ColorModel=Gray
+
+-o print-quality=3   # draft
+-o print-quality=4   # normal
+-o print-quality=5   # high
+```
+
+---
+
+# 📦 Paper / tray
+
+```bash
+-o media=A4
+-o media=Letter
+-o InputSlot=tray1
+-o InputSlot=manual
+```
+
+---
+
+# 🔁 Job handling
+
+```bash
+-H hold            # hold job
+-H resume          # resume job
+-H immediate       # print ASAP
+```
+
+---
+
+# 🔍 Debug / info
+
+```bash
+lpstat -p -d       # printers + default
+lpstat -o          # jobs
+lpoptions -l       # printer-specific options
+```
+
+---
+
+# 🔥 Real-world example (what you actually want)
+
+```bash
+lp -d HP_LaserJet \
+   -o page-ranges=142-184 \
+   -o sides=two-sided-long-edge \
+   -o media=A4 \
+   -o print-quality=5 \
+   file.pdf
+```
+
+---
+
+# ⚠️ Important reality check
+
+Not all printers support all options. The **real supported ones** come from:
+
+```bash
+lpoptions -p PRINTER_NAME -l
+```
+
+That command is gold—use it.
+
+---
+
+If you want, tell me your **printer model**, and I’ll give you a *perfect command tuned to it* (no guessing, no trial and error).

flake.lock

@@ -135,11 +135,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1776734388,
-        "narHash": "sha256-vl3dkhlE5gzsItuHoEMVe+DlonsK+0836LIRDnm6MXQ=",
+        "lastModified": 1777077449,
+        "narHash": "sha256-AIiMJiqvGrN4HyLEbKAoCSRRYn0rnlW5VbKNIMIYqm4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "10e7ad5bbcb421fe07e3a4ad53a634b0cd57ffac",
+        "rev": "a4bf06618f0b5ee50f14ed8f0da77d34ecc19160",
         "type": "github"
       },
       "original": {

flake.nix

@@ -38,7 +38,7 @@
     pkgs = nixpkgs.legacyPackages.${system};
     pkgs-unstable = import nixpkgs-unstable {
       inherit system;
-      config.allowUnfree = false;
+      config.allowUnfree = true; #hplipWithPlugins is unfree...
     };
   in {
     nixosConfigurations = {

hosts/laptop/configuration.nix

@@ -20,6 +20,7 @@
     ../../modules/nixos/nixUtils.nix
     ../../hostsModules/laptop/nixos/udev.nix
     ../../hostsModules/laptop/nixos/disk.nix
+    ../../modules/nixos/printer.nix
   ];
 
 
@@ -50,6 +51,9 @@
     extraSpecialArgs = {inherit inputs pkgs-unstable;};
   };
 
+  services.dbus.enable = true;
+  security.polkit.enable = true;
+
   environment.pathsToLink = [
     "/share/applications"
     "/share/xdg-desktop-portal"
@@ -120,8 +124,6 @@
   # Configure console keymap
   console.keyMap = "fr_CH";
 
-  # Enable CUPS to print documents.
-  services.printing.enable = true;
 
   # Enable sound with pipewire.
   services.pulseaudio.enable = false;
@@ -156,7 +158,7 @@
   
 
   # Allow unfree packages
-  nixpkgs.config.allowUnfree = true; # Nonfree packages: Obsidian
+  nixpkgs.config.allowUnfree = true; # Nonfree packages: hplipWithPlugin
 
   # List packages installed in system profile. To search, run:
   # $ nix search wget

modules/nixos/printer.nix

@@ -0,0 +1,43 @@
+{
+  config,
+  pkgs,
+  ...
+}: {
+  #https://wiki.nixos.org/wiki/Printing
+    services.avahi = {
+    enable = true;
+    nssmdns4 = true;
+    openFirewall = true;
+  };
+  
+  # Enable CUPS to print documents.
+  services.printing = {
+    enable = true;
+    drivers = with pkgs; [
+      cups-filters
+      #cups-browsed
+      #gutenprint
+      #gutenprintBin
+      hplipWithPlugin
+      hplip
+    ];
+  };
+  services.ipp-usb.enable = true;
+  environment.systemPackages = with pkgs; [ 
+    kdePackages.print-manager
+    ghostscript
+    hplipWithPlugin
+  ];
+hardware.printers = {
+  ensurePrinters = [
+    {
+      name = "HP_OfficeJet_Pro_7740";
+      location = "Home";
+      deviceUri = "hp:/usb/OfficeJet_Pro_7740_series";
+      model = "drv:///hp/hpcups.drv/hp-officejet_pro_7740_series.ppd";
+    }
+  ];
+
+  ensureDefaultPrinter = "HP_OfficeJet_Pro_7740";
+};
+}

modules/other/desktopEntries.nix

@@ -1,9 +1,7 @@
 {
   ...
 }:
-# add a desktop entry here if you have an error like
-# Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: App info not found for 'org.quickshell'")
-
+# see ../../docs/printing.md
 {
   home.file.".local/share/applications/org.quickshell.desktop" = {
     enable = true;
@@ -19,4 +17,16 @@
       X-DBUS-ServiceName=org.quickshell
     '';
   };
+  home.file.".local/share/applications/org.kde.PrintQueue.desktop" = {
+    enable = true;
+    text = ''
+      [Desktop Entry]
+      Type=Application
+      Name=Print Queue
+      Exec=print-queue
+      Icon=printer
+      Categories=Utility;
+      StartupNotify=true
+      '';
+  };
 }