From 916751169b714ba902d9a72d9625071cb499adc6 Mon Sep 17 00:00:00 2001
From: 514fpv <koishi@514fpv.one>
Date: Tue, 2 Jan 2024 14:46:03 +0800
Subject: [PATCH] feat(io): add various I/O configuration

---
 faucet/io/default.nix | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 faucet/io/default.nix

diff --git a/faucet/io/default.nix b/faucet/io/default.nix
new file mode 100644
index 00000000..381554db
--- /dev/null
+++ b/faucet/io/default.nix
@@ -0,0 +1,42 @@
+{ pkgs
+, lib
+, config
+, ... }: with lib; let
+  cfg = config.faucet.io;
+in {
+  options.faucet.io = {
+    betaflight = mkEnableOption "betaflight udev rules" // { default = true; };
+    bluetooth = mkEnableOption "bluetooth daemons and state persistence" // { default = true; };
+    audio = mkEnableOption "pulseaudio server configuration" // { default = true; };
+    coredump = mkEnableOption "save coredumps handled by systemd";
+  };
+
+  config = {
+    services.udev.extraRules = "" + (if cfg.betaflight then ''
+      # DFU (Internal bootloader for STM32 and AT32 MCUs)
+      SUBSYSTEM=="usb", ATTRS{idVendor}=="2e3c", ATTRS{idProduct}=="df11", MODE="0664", GROUP="dialout"
+      SUBSYSTEM=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", MODE="0664", GROUP="dialout"
+    '' else "");
+
+    networking.networkmanager.enable = mkDefault true;
+    hardware.bluetooth.enable = mkDefault cfg.bluetooth;
+
+    hardware.pulseaudio = mkIf cfg.audio {
+      enable = true;
+      support32Bit = true;
+    };
+    #nixpkgs.config.pulseaudio = mkIf cfg.audio;
+
+    security.pam.loginLimits = mkIf (!cfg.coredump) (singleton { domain = "*"; item = "core"; type = "hard"; value = "0"; });
+    systemd.coredump.extraConfig = mkIf (!cfg.coredump) "Storage=none";
+
+    environment.persistence."/nix/persist/fhs".directories = [
+      "/var/log"
+      "/var/lib/systemd/backlight"
+    ] ++
+    optional config.networking.networkmanager.enable "/etc/NetworkManager/system-connections" ++
+    optional cfg.bluetooth "/var/lib/bluetooth" ++
+    optional cfg.coredump "/var/lib/systemd/coredump";
+    environment.persistence."/nix/persist/fhs".hideMounts = true;
+  };
+}