keychron-udev-rules: init at 23-10-2025 (#454769)

maintainers/maintainer-list.nix

@@ -13989,6 +13989,12 @@
     name = "Tomas Krupka";
     matrix = "@krupkat:matrix.org";
   };
+  kruziikrel13 = {
+    github = "kruziikrel13";
+    name = "Michael Petersen";
+    email = "dev@michaelpetersen.io";
+    githubId = 72793125;
+  };
   krzaczek = {
     name = "Pawel Krzaczkowski";
     email = "pawel@printu.pl";

nixos/modules/hardware/keyboard/qmk.nix

@@ -8,15 +8,18 @@
 let
   cfg = config.hardware.keyboard.qmk;
   inherit (lib) mkEnableOption mkIf;
-
 in
 {
   options.hardware.keyboard.qmk = {
     enable = mkEnableOption "non-root access to the firmware of QMK keyboards";
+    keychronSupport = mkEnableOption "udev rules for keychron QMK based keyboards";
   };
 
   config = mkIf cfg.enable {
-    services.udev.packages = [ pkgs.qmk-udev-rules ];
+    services.udev.packages = [
+      pkgs.qmk-udev-rules
+    ]
+    ++ lib.optionals cfg.keychronSupport [ pkgs.keychron-udev-rules ];
     users.groups.plugdev = { };
   };
 }

pkgs/by-name/ke/keychron-udev-rules/package.nix

@@ -0,0 +1,37 @@
+{
+  lib,
+  stdenvNoCC,
+  udevCheckHook,
+  writeTextFile,
+}:
+stdenvNoCC.mkDerivation (finalAttrs: {
+  pname = "keychron-udev-rules";
+  version = "23-10-2025";
+
+  nativeBuildInputs = [ udevCheckHook ];
+
+  src = writeTextFile {
+    name = "69-keychron.rules";
+    text = ''
+      KERNEL=="event*", SUBSYSTEM=="input", ENV{ID_VENDOR_ID}=="3434", ENV{ID_INPUT_JOYSTICK}=="*?", ENV{ID_INPUT_JOYSTICK}=""
+    '';
+  };
+
+  dontConfigure = true;
+  dontUnpack = true;
+  dontBuild = true;
+  dontFixup = true;
+
+  installPhase = ''
+    runHook preInstall
+    install -Dm644 $src $out/lib/udev/rules.d/69-keychron.rules
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Keychron Keyboard Udev Rules, fixes issues with keyboard detection on Linux";
+    license = licenses.mit;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ kruziikrel13 ];
+  };
+})