Big cleanup ദ്ദി^._.^)

nix/dibbler.nix

@@ -1,38 +1,20 @@
-{ lib, python3Packages, fetchFromGitHub
-, conf ? ../conf.py
+{ lib
+, python3Packages
+, fetchFromGitHub
 }:
-
 python3Packages.buildPythonApplication {
   pname = "dibbler";
   version = "unstable-2021-09-07";
-
-  format = "other";
-
   src = lib.cleanSource ../.;
 
+  format = "pyproject";
+
+  nativeBuildInputs = with python3Packages; [ setuptools ];
   propagatedBuildInputs = with python3Packages; [
     brother-ql
-    sqlalchemy
+    matplotlib
     psycopg2
     python-barcode
+    sqlalchemy
   ];
-
-  preInstall = ''
-    libdir=$out/lib/${python3Packages.python.libPrefix}/site-packages
-    mkdir -p $out/bin $libdir
-  '';
-
-  installPhase = ''
-    runHook preInstall
-
-    libdir=$out/lib/${python3Packages.python.libPrefix}/site-packages
-    mv * $libdir
-    
-    cp ${conf} $libdir/
-
-    mv $libdir/text_based.py $out/bin/dibbler
-
-    runHook postInstall
-  '';
-
 }

nix/module.nix

@@ -0,0 +1,84 @@
+{ config, pkgs, lib, ... }: let
+  cfg = config.services.dibbler;
+in {
+  options.services.dibbler = {
+    package = lib.mkPackageOption pkgs "dibbler" { };
+    config = lib.mkOption {
+      default = ../conf.py;
+    };
+  };
+
+  config = let
+    screen = "${pkgs.screen}/bin/screen";
+  in {
+    boot = {
+      consoleLogLevel = 0;
+      enableContainers = false;
+      loader.grub.enable = false;
+    };
+
+    users = {
+      groups.dibbler = { };
+      users.dibbler = {
+        group = "dibbler";
+        extraGroups = [ "lp" ];
+        isNormalUser = true;
+        shell = ((pkgs.writeShellScriptBin "login-shell" "${screen} -x dibbler") // {shellPath = "/bin/login-shell";});
+      };
+    };
+
+    systemd.services.screen-daemon = {
+      description = "Dibbler service screen";
+      wantedBy = [ "default.target" ];
+      serviceConfig = {
+        ExecStartPre = "-${screen} -X -S dibbler kill";
+        ExecStart = "${screen} -dmS dibbler -O -l ${cfg.package}/bin/dibbler --config ${cfg.config}";
+        ExecStartPost = "${screen} -X -S dibbler width 42 80";
+        User = "dibbler";
+        Group = "dibbler";
+        Type = "forking";
+        RemainAfterExit = false;
+        Restart = "always";
+        RestartSec = "5s";
+        SuccessExitStatus = 1;
+      }; 
+    };
+
+    # https://github.com/NixOS/nixpkgs/issues/84105
+    boot.kernelParams = [
+      "console=ttyUSB0,9600"
+      "console=tty1"
+    ];
+    systemd.services."serial-getty@ttyUSB0" = {
+      enable = true;
+      wantedBy = [ "getty.target" ]; # to start at boot
+      serviceConfig.Restart = "always"; # restart when session is closed
+    };
+
+    services = {
+      openssh = {
+        enable = true;
+        permitRootLogin = "yes";
+      };
+
+      getty.autologinUser = lib.mkForce "dibbler";
+      udisks2.enable = false;
+    };
+
+    networking.firewall.logRefusedConnections = false;
+    console.keyMap = "no";
+    programs.command-not-found.enable = false;
+    i18n.supportedLocales = [ "en_US.UTF-8/UTF-8" ];
+    environment.noXlibs = true;
+
+    documentation = {
+      info.enable = false;
+      man.enable = false;
+    };
+
+    security = {
+      polkit.enable = lib.mkForce false;
+      audit.enable = false;
+    };
+  };
+}