feat(nixos-95): extract DE themining into nixosModule

the desktop environment can be included via `self.nixosModules.nixos95`

this will expose two options (for now):
nixos95.enable -> enable the desktop environment
nixos95.wallpaper -> path to the wallpaper to use

currently the setup is closy coupled to this configuration,
which will change in the future, so it can be used with any configuration

Configurations/Hosts/Default/configuration.nix

@@ -23,48 +23,24 @@ in {
     # Home Manager integration
     inputs.home-manager.nixosModules.home-manager
 
+    # nixos95
+    inputs.self.nixosModules.nixos95
+
   ];
   ################################################################
   # Display & Desktop Environment
   ################################################################
 
-  services.xserver = {
+  nixos95 = {
     enable = true;
-    desktopManager.xfce.enable = true;
+    user = username;
-    xkb = {
-      layout = "de";
-      variant = "";
-    };
   };
 
-  services.xserver.displayManager.lightdm.enable = false;
-
-  services.displayManager.sddm = {
-    enable = true;
-    package = pkgs.qt6Packages.sddm;
-  };
-
-  xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
-
   ################################################################
   # System Packages (XFCE & Utilities)
   ################################################################
 
   environment.systemPackages = with pkgs; [
-    xdg-desktop-portal-gtk
-
-    # XFCE Core
-    xfce.xfwm4
-    xfce.xfce4-panel
-    xfce.xfce4-session
-    xfce.xfce4-settings
-    xfce.thunar
-    xfce.mousepad
-    xfce.xfce4-terminal
-    xfce.xfce4-appfinder
-    xfce.xfce4-power-manager
-    xfce.xfce4-notifyd
-    xfce.xfce4-whiskermenu-plugin
 
     # Optional Extras
     xfce.gigolo

Configurations/Hosts/Default/home/home.nix

@@ -24,9 +24,6 @@ in {
     # All Home Manager Modules
     ../../../../Modules/Applications
 
-    # Extended Retro theme
-    ../../../../Modules/Desktops/XFCE-retro
-  
     # Desktop applications
     ./desktop.nix
   ];

Modules/Desktops/XFCE-retro/default.nix

@@ -1,79 +0,0 @@
-{
-  config,
-  pkgs,
-  lib,
-  ...
-}: let
-  
-  chicago95 = pkgs.callPackage ../../../Ressources/Themes/Chicago95/chicago95.nix {};
-  dotfilesPath = ./Dotfiles;
-  resourcesPath = ../../../Ressources;
-  wallpaperFile = "Wallpaper/NixOS-95-wallpaper.png";
-  wallpaperPath = "${config.home.homeDirectory}/${wallpaperFile}";
-  wallpaperOrigin = "${resourcesPath}/Images/Wallpapers/Wallpaper-1.png";
-  dotfiles = "${dotfilesPath}";
-in {
-  gtk = {
-    enable = true;
-    theme = {
-      name = "Chicago95";
-      package = chicago95;
-    };
-    iconTheme = {
-      name = "Win95_plus";
-      package = pkgs.callPackage ../../../Ressources/Themes/Win95_plus/win95_plus.nix {};
-    };
-    cursorTheme = {
-      name = "Chicago95";
-      package = chicago95;
-    };
-    font = {
-      name = "Sans";
-      size = 12;
-    };
-  };
-
-  home.pointerCursor = {
-    name = "Chicago95";
-    package = chicago95;
-    size = 24;
-    gtk.enable = true;
-    x11.enable = true;
-  };
-
-  home.packages = with pkgs; [
-    xfce.xfce4-panel
-    xfce.xfconf
-    xfce.xfdesktop
-    xfce.xfce4-whiskermenu-plugin
-    xfce.xfce4-docklike-plugin
-    xorg.xrandr
-  ];
-
-  home.file = {
-    "${wallpaperFile}" = {
-      source = wallpaperOrigin;
-    };
-  };
-
-  xdg.configFile = {
-    "xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop.xml".source = "${dotfiles}/xfce4-desktop.xml";
-    "xfce4/xfconf/xfce-perchannel-xml/xfce4-sessions.xml".source = "${dotfiles}/xfce4-sessions.xml";
-    "xfce4/xfconf/xfce-perchannel-xml/xsettings.xml".source = "${dotfiles}/xsettings.xml";
-    "xfce4/xfconf/xfce-perchannel-xml/xfwm4.xml".source = "${dotfiles}/xfwm4.xml";
-    "xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml".source = "${dotfiles}/xfce4-keyboard-shortcuts.xml";
-
-    # Panel:
-    "xfce4/xfconf/xfce-perchannel-xml/xfce4-panel.xml".source = "${dotfiles}/xfce4-panel.xml";
-    "xfce4/panel/launcher-13/brave.desktop".source = "${dotfiles}/launcher-13/brave.desktop";
-    "xfce4/panel/launcher-14/signal.desktop".source = "${dotfiles}/launcher-14/signal.desktop";
-    "xfce4/panel/launcher-15/obsidian.desktop".source = "${dotfiles}/launcher-15/obsidian.desktop";
-    "xfce4/panel/launcher-16/spotify.desktop".source = "${dotfiles}/launcher-16/spotify.desktop";
-
-  
-  };
-
-  home.activation.applyXfceTweaks = lib.hm.dag.entryAfter ["writeBoundary"] ''
-    ${pkgs.xfce.xfdesktop}/bin/xfdesktop --reload
-  '';
-}

README.md

@@ -40,11 +40,15 @@ NixOS-95/
 │               └── user-vars.nix
 ├── Modules/
 │   ├── Applications/
-│   ├── Desktops/
-│   │   └── XFCE-retro/
-│   │       ├── default.nix
-│   │       └── Dotfiles/
 │   └── System/
+├── nixos95
+│   ├── dotfiles/
+│   ├── core.nix
+│   ├── default.nix
+│   ├── desktop.nix
+│   ├── keybinds.nix
+│   ├── taskbar.nix
+│   └── theme.nix
 ├── Ressources/
 │   ├── Icons/
 │   ├── Images/

flake.nix

@@ -23,6 +23,9 @@
     home-manager,
     ...
   }: {
+
+    nixosModules.nixos95 = import ./nixos95;
+
     nixosConfigurations = {
       ############################################################
       # 💻 Default Host

nixos95/core.nix

@@ -0,0 +1,22 @@
+{ config, lib, pkgs, ... }: let
+  cfg = config.nixos95;
+in lib.mkIf cfg.enable {
+
+  services.xserver = {
+    enable = true;
+    desktopManager.xfce.enable = true;
+    xkb = {
+      layout = "de";
+      variant = "";
+    };
+  };
+  services.xserver.displayManager.lightdm.enable = false;
+
+  services.displayManager.sddm = {
+    enable = true;
+    package = pkgs.qt6Packages.sddm;
+  };
+
+  xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
+
+}

nixos95/default.nix

@@ -0,0 +1,24 @@
+{ config, lib, ...}: let 
+  cfg = config.nixos95;
+in {
+
+  options.nixos95 = {
+    enable = lib.mkEnableOption "NixOS-95 Desktop environment";
+    user = lib.mkOption {
+      description = ''
+        Username of the home-manager user.
+      '';
+      type = lib.types.str;
+      example = "user";
+    };
+  };
+
+  imports = [
+    ./core.nix
+    ./desktop.nix
+    ./keybinds.nix
+    ./taskbar.nix
+    ./theme.nix
+  ];
+
+}

nixos95/desktop.nix

@@ -0,0 +1,35 @@
+{ inputs, config, lib, pkgs, ... }: let 
+  cfg = config.nixos95;
+in {
+
+  options.nixos95 = {
+  
+    wallpaper = lib.mkOption {
+      description = "The wallpaper to use";
+      type = lib.types.path;
+      default = "${inputs.self}/Ressources/Images/Wallpapers/Wallpaper-1.png";
+    };
+
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    home-manager.users.${cfg.user} = {
+      
+      xdg.configFile = {
+        "xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop.xml" = let 
+          sed = lib.getExe pkgs.gnused;
+          desktop = pkgs.runCommand "desktop.xml" { } ''
+            ${sed} -e "s|NIXOS-95_WALLPAPER|${cfg.wallpaper}|g" ${./dotfiles/xfce4-desktop.xml} > $out
+          '';
+        in {
+          force = true;
+          source = desktop;
+        };
+      };
+
+    };
+
+  };
+
+}

nixos95/dotfiles/xfce4-desktop.xml

@@ -5,13 +5,13 @@
   <property name="backdrop" type="empty">
     <property name="screen0" type="empty">
       <property name="monitor0" type="empty">
-        <property name="image-path" type="string" value="/home/user/Wallpaper/NixOS-95-wallpaper.png"/>
+        <property name="image-path" type="string" value="NIXOS-95_WALLPAPER"/>
         <property name="image-show" type="bool" value="true"/>
         <property name="image-style" type="int" value="5"/>
       </property>
       <property name="monitoreDP-1" type="empty">
         <property name="workspace0" type="empty">
-          <property name="last-image" type="string" value="/home/user/Wallpaper/NixOS-95-wallpaper.png"/>
+          <property name="last-image" type="string" value="NIXOS-95_WALLPAPER"/>
           <property name="image-style" type="int" value="5"/>
         </property>
       </property>

nixos95/keybinds.nix

@@ -0,0 +1,20 @@
+/**
+* For now this just hard copies the config file.
+* This can be improved by allowing users to define there own keybinds
+*/
+{ config, lib, ... }: let
+  cfg = config.nixos95;
+in lib.mkIf cfg.enable {
+
+  home-manager.users.${cfg.user} = {
+
+    xdg.configFile = {
+      "xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml" = {
+        force = true;
+        source = ./dotfiles/xfce4-keyboard-shortcuts.xml;
+      };
+    };
+
+  };
+
+}

nixos95/taskbar.nix

@@ -0,0 +1,30 @@
+/**
+* For now this just hard copies the config file.
+* This can be improved by allowing users to define there own task bar config
+*/
+{ config, lib, pkgs, ... }: let 
+  cfg = config.nixos95;
+in lib.mkIf cfg.enable {
+
+  environment.systemPackages = [
+    pkgs.xfce.xfce4-whiskermenu-plugin
+  ];
+
+  home-manager.users.${cfg.user} = {
+    
+    xdg.configFile = {
+      "xfce4/xfconf/xfce-perchannel-xml/xfce4-panel.xml" = {
+        force = true;
+        source = ./dotfiles/xfce4-panel.xml;
+      };
+
+      # Panel:
+      "xfce4/panel/launcher-13/brave.desktop".source = ./dotfiles/launcher-13/brave.desktop;
+      "xfce4/panel/launcher-14/signal.desktop".source = ./dotfiles/launcher-14/signal.desktop;
+      "xfce4/panel/launcher-15/obsidian.desktop".source = ./dotfiles/launcher-15/obsidian.desktop;
+      "xfce4/panel/launcher-16/spotify.desktop".source = ./dotfiles/launcher-16/spotify.desktop;
+    };
+
+  };
+
+}

nixos95/theme.nix

@@ -0,0 +1,35 @@
+{ inputs, config, lib, pkgs, ... }: let
+  cfg = config.nixos95;
+
+  theme_dir = "${inputs.self}/Ressources/Themes";
+  baseTheme = {
+    name = "Chicago95";
+    package = pkgs.callPackage "${theme_dir}/Chicago95/chicago95.nix" { };
+  };
+  iconTheme = {
+    name = "Win95_plus";
+    package = pkgs.callPackage "${theme_dir}/Win95_plus/win95_plus.nix" { };
+  };
+in lib.mkIf cfg.enable {
+
+  home-manager.users.${cfg.user} = {
+    gtk = {
+      enable = true;
+      theme = baseTheme;
+      iconTheme = iconTheme;
+      cursorTheme = baseTheme;
+      font = {
+        name = "Sans";
+        size = 12;
+      };
+    };
+
+    home.pointerCursor = {
+      size = 24;
+      gtk.enable = true;
+      x11.enable = true;
+    } // baseTheme;
+  };
+
+}
+