nixos/xppen: init

Co-authored-by: yakrobat <[email protected]>

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -118,6 +118,8 @@
 
 - [Immersed](https://immersed.com/), a closed-source coworking platform. Available as [programs.immersed](#opt-programs.immersed.enable).
 
+- [XPPen](https://www.xp-pen.com/), the official closed-source driver for XP Pen tablets. Available as [programs.xppen](#opt-programs.xppen.enable).
+
 - [HomeBox](https://github.com/sysadminsmedia/homebox): the inventory and organization system built for the Home User. Available as [services.homebox](#opt-services.homebox.enable).
 
 - [matrix-hookshot](https://matrix-org.github.io/matrix-hookshot), a Matrix bot for connecting to external services. Available as [services.matrix-hookshot](#opt-services.matrix-hookshot.enable).

nixos/modules/module-list.nix

@@ -326,6 +326,7 @@
   ./programs/xfconf.nix
   ./programs/xfs_quota.nix
   ./programs/xonsh.nix
+  ./programs/xppen.nix
   ./programs/xss-lock.nix
   ./programs/xwayland.nix
   ./programs/yabar.nix

nixos/modules/programs/xppen.nix

@@ -0,0 +1,53 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.programs.xppen;
+in
+
+{
+  options.programs.xppen = {
+    enable = lib.mkEnableOption "XPPen PenTablet application";
+    package = lib.mkPackageOption pkgs "xppen_4" {
+      example = "pkgs.xppen_3";
+      extraDescription = ''
+        Use xppen_4 for newer and xppen_3 for older tablets.
+        To check which version of the driver you need, go to
+        https://www.xp-pen.com/download/ then select your tablet
+        and look for the major version in the available files for Linux.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware.uinput.enable = true;
+
+    environment.systemPackages = [ cfg.package ];
+
+    services.udev.packages = [ cfg.package ];
+
+    systemd.services.xppen-create-config-dir = {
+      restartTriggers = [ cfg.package ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        Type = "oneshot";
+        TimeoutSec = 60;
+        ExecStart = pkgs.writeScript "xppen-create-config-dir" ''
+          #!${pkgs.bash}/bin/bash
+          install -m 755 -d "/var/lib/pentablet/conf/xppen"
+          readarray -d "" files < <(find ${cfg.package}/usr/lib/pentablet/conf -type f -print0)
+          for file in "''${files[@]}"; do
+            file_new="/var''${file#${cfg.package + "/usr"}}"
+            if [ ! -f $file_new ]; then
+              install -m 666 "''$file" "''$file_new"
+            fi
+          done
+        '';
+      };
+    };
+  };
+}