From 8264c4659dbdb8d98310414badf288f8200fe242 Mon Sep 17 00:00:00 2001
From: Tim Keller <tjk@tjkeller.xyz>
Date: Wed, 3 Jun 2026 13:54:18 -0500
Subject: aliases for printer and new power control relay. moonraker power
 control for printer enabled and accessible via mainsail. power control python
 script for power control via http in moonraker

---
 hosts/gnuslashprinter/flask-relay-ctl.nix | 37 +++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 hosts/gnuslashprinter/flask-relay-ctl.nix

(limited to 'hosts/gnuslashprinter/flask-relay-ctl.nix')

diff --git a/hosts/gnuslashprinter/flask-relay-ctl.nix b/hosts/gnuslashprinter/flask-relay-ctl.nix
new file mode 100644
index 0000000..27507b6
--- /dev/null
+++ b/hosts/gnuslashprinter/flask-relay-ctl.nix
@@ -0,0 +1,37 @@
+{ pkgs, ... }: let
+	flaskrelayctl = pkgs.python3Packages.buildPythonApplication {
+		pname = "flaskrelayctl";
+		version = "1.0";
+		src = ./resources/flaskrelayctl;
+		pyproject = true;
+		build-system = with pkgs.python3Packages; [ setuptools ];
+		dependencies = with pkgs.python3Packages; [
+			flask
+			pyserial
+		];
+	};
+in {
+	users.users.relay-api = {
+		isSystemUser = true;
+		group = "relay-api";
+		extraGroups = [ "dialout" ];
+	};
+	users.groups.relay-api = {};
+
+	systemd.services.relay-api = let
+		RELAYCTL_DEV = "/dev/gsp-power";
+	in {
+		description = "USB Relay Flask API";
+		wantedBy = [ "multi-user.target" ];
+		after = [ "network.target" ];
+		serviceConfig = {
+			User = "relay-api";
+			Group = "relay-api";
+			ExecStart = "${flaskrelayctl}/bin/flaskrelayctl";
+			Restart = "always";
+			DeviceAllow = [ "${RELAYCTL_DEV} rw" ];
+		};
+	};
+
+	environment.systemPackages = [ flaskrelayctl ];
+}
-- 
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