use shared config from niphas

configs/applicative.nix

@@ -18,44 +18,45 @@
     ];
   };
 
-  services.displayManager.autoLogin.enable = lib.mkForce false;
+  nixpkgs.overlays = [
+    (final: prev: {
+      niphas-wallpaper =
+        let
+          backgroundColor = config.lib.stylix.colors.withHashtag.base06;
+          foregroundColor = config.lib.stylix.colors.withHashtag.base01;
+          width = 1920;
+          height = 1080;
 
-  # if we have multiple users, they should be able to log in through a greeter
-  programs.regreet =
-    let
-      wallpaper =
-        pkgs.runCommand "textured-monochrome-wallpaper.png"
+          svgUrl = "https://applicative.systems/_astro/logo-full.D8zRvqBZ.svg";
+          logoSvg = prev.fetchurl {
+            url = svgUrl;
+            hash = "sha256-qXDIEZsAPn4eUJ3kb5U6L3PMUCtWGYqhqyIaBt7FntE=";
+          };
+        in
+        prev.runCommand "applicative-wallpaper.png"
           {
-            buildInputs = [ pkgs.imagemagick ];
+            nativeBuildInputs = [ prev.imagemagick ];
           }
           ''
-            magick -size 2560x1440 plasma:fractal \
-              -colorspace Gray \
-              -normalize \
-              -fill ${lib.escapeShellArg config.lib.stylix.colors.withHashtag.base00} -colorize 100% \
-              -attenuate 0.15 +noise Gaussian \
+            # 1. We use -background to set the canvas color
+            # 2. We use -fuzz and -opaque to replace the logo's internal colors
+            # 3. We use -gravity and -extent to center it on a wallpaper-sized canvas
+
+            convert \
+              -background none \
+              -density 300 \
+              "${logoSvg}" \
+              -fuzz 100% -fill "${foregroundColor}" -opaque black \
+              -resize 800x800 \
+              -gravity center \
+              -background "${backgroundColor}" \
+              -extent ${toString width}x${toString height} \
               $out
           '';
-    in
-    {
-      enable = true;
-      settings = {
-        background = {
-          path = wallpaper;
-          fit = "Fill";
-        };
-        appearance.greeting_msg = "स्वागतम्";
-        widget.clock.format = "%F %H:%M";
-      };
-      font = {
-        inherit (config.stylix.fonts.sansSerif) name;
-        size = config.stylix.fonts.sizes.applications;
-      };
-      iconTheme = {
-        inherit (config.home-manager.users.me.gtk.iconTheme) package name;
-      };
-    };
+    })
+  ];
 
+  services.getty.autologinOnce = lib.mkForce false;
 
   # to run nspawn in nix sandbox
   nix.settings = {
@@ -65,8 +66,6 @@
       "auto-allocate-uids"
       "cgroups"
     ];
-    extra-sandbox-paths = [ "/dev/net" ]; # needed for tests of VPNs
-
     trusted-users = [ config.users.users.applicative.name ];
   };
 
@@ -86,82 +85,4 @@
       commands = [ "ALL" ];
     }
   ];
-
-  home-manager.users.applicative =
-    let
-      mainGitConfig = (import ./git.nix {
-        inherit pkgs lib config;
-      }).home-manager.users.me.programs.git;
-      mainAlacrittyConfig = (import ./alacritty.nix {
-        inherit pkgs lib config;
-      }).home-manager.users.me.programs.alacritty;
-    in
-    lib.recursiveUpdate
-      (import ./graphical/home-manager.nix {
-        inherit lib pkgs config;
-      })
-      {
-        xdg.enable = true;
-        home.stateVersion = "25.11";
-
-        programs.git = {
-          enable = true;
-          settings = {
-            inherit (mainGitConfig.settings) alias;
-          };
-        };
-
-        programs.alacritty = mainAlacrittyConfig;
-
-        services.hyprpaper =
-          let
-            # asgWallpaper = pkgs.fetchurl {
-            #   url = "http://c.krebsco.de/asg-wallpaper.png";
-            #   hash = "sha256-XLp8XcUgFgDKW5Qae0//0Xw9lhribcevQTVSQvClEB4=";
-            # };
-
-            backgroundColor = config.lib.stylix.colors.withHashtag.base06;
-            foregroundColor = config.lib.stylix.colors.withHashtag.base01;
-            width = 1920;
-            height = 1080;
-
-            svgUrl = "https://applicative.systems/_astro/logo-full.D8zRvqBZ.svg";
-            logoSvg = pkgs.fetchurl {
-              url = svgUrl;
-              hash = "sha256-qXDIEZsAPn4eUJ3kb5U6L3PMUCtWGYqhqyIaBt7FntE=";
-            };
-
-            asgWallpaper =
-              pkgs.runCommand "applicative-wallpaper.png"
-                {
-                  nativeBuildInputs = [ pkgs.imagemagick ];
-                }
-                ''
-                  # 1. We use -background to set the canvas color
-                  # 2. We use -fuzz and -opaque to replace the logo's internal colors
-                  # 3. We use -gravity and -extent to center it on a wallpaper-sized canvas
-
-                  convert \
-                    -background none \
-                    -density 300 \
-                    "${logoSvg}" \
-                    -fuzz 100% -fill "${foregroundColor}" -opaque black \
-                    -resize 800x800 \
-                    -gravity center \
-                    -background "${backgroundColor}" \
-                    -extent ${toString width}x${toString height} \
-                    $out
-                '';
-          in
-          {
-            enable = true;
-            settings = {
-              ipc = false;
-              splash = true;
-              preload = [ "${asgWallpaper}" ];
-              wallpaper = [ ",${asgWallpaper}" ];
-            };
-          };
-
-      };
 }