From 4a182ff5225b5ab818cfe7159dead8bb5ab065dc Mon Sep 17 00:00:00 2001
From: Simon Bruder <simon@sbruder.de>
Date: Wed, 28 Jun 2023 12:53:29 +0200
Subject: [PATCH] fuuko: Make co2 exporter more reliable
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This also “fixes” a typo in the variable name.
---
 machines/fuuko/services/co2_exporter.nix | 5 +++++
 pkgs/co2_exporter/module.nix             | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/machines/fuuko/services/co2_exporter.nix b/machines/fuuko/services/co2_exporter.nix
index e0a4e51..16d9237 100644
--- a/machines/fuuko/services/co2_exporter.nix
+++ b/machines/fuuko/services/co2_exporter.nix
@@ -4,5 +4,10 @@
   services.co2_exporter = {
     enable = true;
     listenAddress = "${config.sbruder.wireguard.home.address}:9672"; # uses port numer of unrelated co2 exporter to avoid 8080
+    device = "/dev/airco2ntrol";
   };
+
+  services.udev.extraRules = ''
+    ACTION=="add", SUBSYSTEM=="hidraw", ATTRS{idVendor}=="04d9", ATTRS{idProduct}=="a052", SYMLINK+="airco2ntrol"
+  '';
 }
diff --git a/pkgs/co2_exporter/module.nix b/pkgs/co2_exporter/module.nix
index 23f93ba..d679fda 100644
--- a/pkgs/co2_exporter/module.nix
+++ b/pkgs/co2_exporter/module.nix
@@ -30,7 +30,7 @@ in
       environment = {
         CO2MONITOR_ADDRESS = cfg.listenAddress;
       } // (lib.optionalAttrs (!isNull cfg.device) {
-        CO2MONITOR_DEVICE = cfg.device;
+        CO2MOINITOR_DEVICE = cfg.device; # MOINITOR ✓
       });
       serviceConfig = {
         ExecStart = "${cfg.package}/bin/co2_exporter";