From d3c788655224e069b60aa37533c128eaec0dd735 Mon Sep 17 00:00:00 2001
From: coon <coon@mailbox.org>
Date: Tue, 30 Sep 2025 19:09:48 +0000
Subject: [PATCH 1/4] configuration.nix: hacky execution of mqtt_client.py via
 systemd

---
 configuration.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configuration.nix b/configuration.nix
index f24f172..4827738 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -22,6 +22,11 @@
     (python3.withPackages (p: with p; [paho-mqtt mido]))
   ];
 
+  systemd.services.mixer-mqtt = {
+    serviceConfig = {
+      ExecStart = "${pkgs.python3.withPackages (p: with p; [ paho-mqtt mido ])}/bin/python3 -u /root/mixer-rpc/mqtt_client.py 172.23.42.20 172.23.42.25";
+    };
+  };
 
   system.stateVersion = "25.05";
 }

From 7c2d8e806a95c0a14f5549ccb2e582adbf9e1cbf Mon Sep 17 00:00:00 2001
From: coon <coon@mailbox.org>
Date: Tue, 30 Sep 2025 19:17:54 +0000
Subject: [PATCH 2/4] configuration.nix: replace -c by PYTHONUNBUFFERED=1 env
 var

---
 configuration.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configuration.nix b/configuration.nix
index 4827738..0a61ab6 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -24,7 +24,8 @@
 
   systemd.services.mixer-mqtt = {
     serviceConfig = {
-      ExecStart = "${pkgs.python3.withPackages (p: with p; [ paho-mqtt mido ])}/bin/python3 -u /root/mixer-rpc/mqtt_client.py 172.23.42.20 172.23.42.25";
+      ExecStart = "${pkgs.python3.withPackages (p: with p; [ paho-mqtt mido ])}/bin/python3 /root/mixer-rpc/mqtt_client.py 172.23.42.20 172.23.42.25";
+      Environment = "PYTHONUNBUFFERED=1";
     };
   };
 

From 4bd5f738e7984168f9ee351e7cecb7d9f7d6fa74 Mon Sep 17 00:00:00 2001
From: coon <coon@mailbox.org>
Date: Tue, 30 Sep 2025 19:21:50 +0000
Subject: [PATCH 3/4] make mqtt_client.py executable

---
 mqtt_client.py | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 mode change 100644 => 100755 mqtt_client.py

diff --git a/mqtt_client.py b/mqtt_client.py
old mode 100644
new mode 100755

From d3b5bfd6cffcb95de2e3b16a2c40dc93181a0700 Mon Sep 17 00:00:00 2001
From: coon <coon@mailbox.org>
Date: Tue, 30 Sep 2025 19:22:20 +0000
Subject: [PATCH 4/4] configuration.nix: auto restart script on crash

---
 configuration.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configuration.nix b/configuration.nix
index 0a61ab6..f209fd8 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -25,6 +25,8 @@
   systemd.services.mixer-mqtt = {
     serviceConfig = {
       ExecStart = "${pkgs.python3.withPackages (p: with p; [ paho-mqtt mido ])}/bin/python3 /root/mixer-rpc/mqtt_client.py 172.23.42.20 172.23.42.25";
+      Restart = "always";
+      RestartSec = 5;
       Environment = "PYTHONUNBUFFERED=1";
     };
   };