CONF added variables for different features to be defined hostbased

Signed-off-by: Stefan Ellmauthaler <stefan.ellmauthaler@tu-dresden.de>

baseconfiguration.nix

@@ -1,4 +1,4 @@
-{ pkgs, name, type, flakes, flakeOutputs, ...}:
+{ pkgs, name, flakes, flakeOutputs, ...}:
 { config, pkgs, lib, ...}:
 {    
   imports =
@@ -11,7 +11,11 @@
       ./programs/aspell.nix
       # home-manager entry-point
       ./users
-    ] ++ type;
+      # layers
+      ./layer
+      # options
+      ./options.nix
+    ];
   
 
   time.timeZone = "Europe/Berlin";
@@ -27,6 +31,7 @@
 
   networking = {
     useDHCP = false;
+    hostName = config.variables.hostName;
   };
 
   nix = {

default.nix

@@ -6,9 +6,8 @@ let
       system = if args ? system then args.system else "x86_64-linux";
       extraModules = if args ? extraModules then args.extraModules else [ ];
       extraOverlays = if args ? extraOverlays then args.extraOverlays else [ ];
-      type = if args ? type then args.type else [ ./layer/graphical.nix ];
       pkgs = flakes.nixpkgs;
-      configuration = if args ? configuration then args.configuration else import ./baseconfiguration.nix  {inherit extraOverlays system pkgs name type flakes flakeOutputs;} ;
+      configuration = if args ? configuration then args.configuration else import ./baseconfiguration.nix  {inherit extraOverlays system pkgs name flakes flakeOutputs;} ;
     in
       {
         inherit name;
@@ -35,6 +34,5 @@ flakes.nixpkgs.lib.listToAttrs (map mkMachine [
   {
     name = "ellmauthaler";
     extraModules = [ flakes.home-manager.nixosModules.home-manager ];
-    type = [ ./layer/server.nix ];
   }
 ])

layer/default.nix

@@ -0,0 +1,4 @@
+{ config, pkgs, lib, ...}:
+{
+  imports = [ ./graphical.nix ];
+}

layer/graphical.nix

@@ -1,13 +1,16 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
+let
+  isgraphical = config.variables.graphical;
+in
 {
-  networking.networkmanager.enable = true;
+  networking.networkmanager.enable = isgraphical;
 
   services = {
     xserver = {
-      enable = true;
-      displayManager.lightdm.enable = true;
+      enable = isgraphical;
+      displayManager.lightdm.enable = isgraphical;
       windowManager.i3 = {
-        enable = true;
+        enable = isgraphical;
         extraPackages = with pkgs; [
           rofi # launcher
           polybarFull # bar
@@ -27,16 +30,16 @@
     printing.enable = true;
   };
 
-  sound.enable = true;
+  sound.enable = isgraphical;
   
   hardware = {
-    pulseaudio.enable = true;
-    bluetooth.enable = true;
+    pulseaudio.enable = isgraphical;
+    bluetooth.enable = isgraphical;
   };
   
-  services.blueman.enable = true;
+  services.blueman.enable = isgraphical;
 
-  environment.systemPackages = with pkgs; [
+  environment.systemPackages = if isgraphical then with pkgs; [
     firefox
     alacritty
     thunderbird
@@ -46,5 +49,5 @@
     keepassxc
     gnome.libsecret
     arandr
-  ];
+  ] else [ ];
 }

machine/ellmauthaler/default.nix

@@ -1,7 +1,11 @@
 { config, pkgs, ...}:
 {
-  networking ={
+
+  variables = {
     hostName = "ellmauthaler";
+  };
+  
+  networking = {
     domain = "net";
   };
 }

machine/nucturne/default.nix

@@ -1,4 +1,8 @@
 { config, pkgs, ...}:
 {
-  networking.hostName = "nucturne"; # define the hostname
-}
+  variables= {
+    hostName = "nucturne";
+    graphical = true;
+  };
+  #networking.hostName = "nucturne"; # define the hostname
+}

machine/stel-xps/default.nix

@@ -1,8 +1,12 @@
 { config, pkgs, ...}:
 {
   imports = [ ./printer.nix ];
-  
-  networking.hostName = "stel-xps"; # define the hostname
+
+  variables = {
+    hostName = "stel-xps";
+    graphical = true;
+  };
+  #networking.hostName = "stel-xps"; # define the hostname
 
   environment.systemPackages = with pkgs; [
     brightnessctl

options.nix

@@ -0,0 +1,21 @@
+{ config, pkgs, lib, ...}:
+{
+  options.variables = with lib; {
+    hostName = mkOption {
+      type = types.str;
+      example = "nucturne";
+      description = "Hostname of the system";
+      default = "hostnamenotset";
+    };
+    graphical = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Whether to enable the graphical environment";
+    };
+    server = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Whether this system is a server";
+    };
+  };
+}

users/ellmau/autorandr.nix

@@ -2,7 +2,7 @@
 {
   home-manager.users.ellmau = {
     programs.autorandr = {
-      enable = true;
+      enable = config.variables.graphical;
       profiles = {
         "home" = {
           fingerprint = {

users/ellmau/default.nix

@@ -40,8 +40,8 @@
         notify = true;
         tray = "auto";
       };
-      blueman-applet.enable = true;
-      network-manager-applet.enable = true ;
+      blueman-applet.enable = config.variables.graphical;
+      network-manager-applet.enable = config.variables.graphical ;
       gnome-keyring = {
         enable = true;
         components = [ "pkcs11" "secrets" "ssh" ];

users/ellmau/dunst.nix

@@ -2,7 +2,7 @@
 {
   home-manager.users.ellmau = {
     services.dunst = {
-      enable = true;
+      enable = config.variables.graphical;
       iconTheme = {
         package = pkgs.numix-icon-theme;
         name = "Numix";

users/ellmau/i3.nix

@@ -1,10 +1,12 @@
 { config, pkgs, lib, ...}:
 {
-  home-manager.users.ellmau = {
-    xdg = {
-      configFile."i3" = {
-        source = conf/i3;
-        recursive = true;
+  config = lib.mkIf config.variables.graphical {
+    home-manager.users.ellmau = {
+      xdg = {
+        configFile."i3" = {
+          source = conf/i3;
+          recursive = true;
+        };
       };
     };
   };

users/ellmau/polybar.nix

@@ -1,8 +1,8 @@
-{ pkgs, ...}:
+{ config, pkgs, ...}:
 {
   home-manager.users.ellmau = {
     services.polybar = {
-      enable = true;
+      enable = config.variables.graphical;
       package = pkgs.polybarFull;
       settings =
         let