From 0db9fb252ff5b9802e8a7f02d23d9c62272ab464 Mon Sep 17 00:00:00 2001
From: roconnor <roconnor@r6.ca>
Date: Thu, 7 May 2026 20:42:29 -0400
Subject: [PATCH] nixos/i2c: update udev rules

Since systemd 258 it is recommended to replace ACTION=="add" with ACTION!="remove".
<https://lists.freedesktop.org/archives/systemd-devel/2025-September/051670.html>

Fixes the issue described in <https://discourse.nixos.org/t/udev-regression-recommended-way-for-udev-rules/73061>.
---
 nixos/modules/hardware/i2c.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nixos/modules/hardware/i2c.nix b/nixos/modules/hardware/i2c.nix
index badb5fbee4b0..0ca6e82dc402 100644
--- a/nixos/modules/hardware/i2c.nix
+++ b/nixos/modules/hardware/i2c.nix
@@ -38,7 +38,7 @@ in
         name = "i2c-udev-rules";
         text = ''
           # allow group ${cfg.group} and users with a seat use of i2c devices
-          ACTION=="add", KERNEL=="i2c-[0-9]*", TAG+="uaccess", GROUP="${cfg.group}", MODE="660"
+          ACTION!="remove", KERNEL=="i2c-[0-9]*", TAG+="uaccess", GROUP="${cfg.group}", MODE="660"
         '';
         destination = "/etc/udev/rules.d/70-i2c.rules";
       }