From 62954a67b5fb9bd3516d97143b212e78858b390a Mon Sep 17 00:00:00 2001
From: aaron <aaron@0x29a.ch>
Date: Sun, 9 Aug 2026 13:49:46 +0200
Subject: [PATCH] feature(udev): add support for vial.rocks configurable
 devices and add the native app as well

---
 hosts/argon/configuration.nix |  1 +
 hosts/neon/configuration.nix  |  1 +
 modules/nixos/packages.nix    |  1 +
 modules/nixos/vial.nix        | 13 +++++++++++++
 4 files changed, 16 insertions(+)
 create mode 100644 modules/nixos/vial.nix

diff --git a/hosts/argon/configuration.nix b/hosts/argon/configuration.nix
index 69e2064..3d20f26 100644
--- a/hosts/argon/configuration.nix
+++ b/hosts/argon/configuration.nix
@@ -25,6 +25,7 @@
     ../../modules/nixos/steam.nix
     ../../modules/nixos/thunar.nix
     ../../modules/nixos/users.nix
+    ../../modules/nixos/vial.nix
   ];
 
   # set hostname
diff --git a/hosts/neon/configuration.nix b/hosts/neon/configuration.nix
index 472ac6f..d49bc60 100644
--- a/hosts/neon/configuration.nix
+++ b/hosts/neon/configuration.nix
@@ -21,6 +21,7 @@
     ../../modules/nixos/settings.nix
     ../../modules/nixos/steam.nix
     ../../modules/nixos/users.nix
+    ../../modules/nixos/vial.nix
   ];
 
   # set hostname
diff --git a/modules/nixos/packages.nix b/modules/nixos/packages.nix
index 372f24f..2268645 100644
--- a/modules/nixos/packages.nix
+++ b/modules/nixos/packages.nix
@@ -35,6 +35,7 @@
     tree
     unzip
     usbutils
+    vial
     vim
     wget
     which
diff --git a/modules/nixos/vial.nix b/modules/nixos/vial.nix
new file mode 100644
index 0000000..35f9793
--- /dev/null
+++ b/modules/nixos/vial.nix
@@ -0,0 +1,13 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # Vial-capable keyboards (lily58 pro r2g) expose a second, non-keyboard raw
+  # HID interface that vial.rocks drives over WebHID. Its /dev/hidraw* node is
+  # root-only by default, so chromium cannot open the device without this rule.
+  services.udev.extraRules = ''
+    # Vial firmware advertises itself through a magic USB serial, so this
+    # matches any vial board rather than just the lily58. uaccess hands the
+    # device to whoever owns the active seat, no group membership needed.
+    KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{serial}=="*vial:f64c2b3c*", TAG+="uaccess"
+  '';
+}