From 9eac410097bf484e17c239f562ee75e75385f0ad Mon Sep 17 00:00:00 2001
From: Felix Singer <felixsinger@posteo.net>
Date: Wed, 19 Feb 2025 21:53:08 +0100
Subject: [PATCH] nixos/libftdi: Init module

By enabling this module, the ftdi system group is created and udev
rules from the libftdi package are enabled. Read-/Write access is
granted to the members of the ftdi group and to seat sessions.

Signed-off-by: Felix Singer <felixsinger@posteo.net>
---
 nixos/modules/hardware/libftdi.nix | 23 +++++++++++++++++++++++
 nixos/modules/module-list.nix      |  1 +
 2 files changed, 24 insertions(+)
 create mode 100644 nixos/modules/hardware/libftdi.nix

diff --git a/nixos/modules/hardware/libftdi.nix b/nixos/modules/hardware/libftdi.nix
new file mode 100644
index 000000000000..b79e2ff8c257
--- /dev/null
+++ b/nixos/modules/hardware/libftdi.nix
@@ -0,0 +1,23 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.hardware.libftdi;
+in
+{
+  options.hardware.libftdi = {
+    enable = lib.mkEnableOption "udev rules for devices supported by libftdi";
+    package = lib.mkPackageOption pkgs "libftdi1" { };
+  };
+
+  config = lib.mkIf cfg.enable {
+    users.groups.ftdi = { };
+    services.udev.packages = [ cfg.package ];
+  };
+
+  meta.maintainers = with lib.maintainers; [ felixsinger ];
+}
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index a09388b9058a..d8dee392d89b 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -78,6 +78,7 @@
   ./hardware/keyboard/zsa.nix
   ./hardware/ksm.nix
   ./hardware/ledger.nix
+  ./hardware/libftdi.nix
   ./hardware/logitech.nix
   ./hardware/mcelog.nix
   ./hardware/network/ath-user-regd.nix