niri blur wallpaper as backdrop

flake.lock

@@ -754,11 +754,11 @@
     "niri-unstable": {
       "flake": false,
       "locked": {
-        "lastModified": 1746124654,
-        "narHash": "sha256-LmhkAt2KLvf8lp+kEUQuTFmmv7iXO8IkwwSaPasfXJw=",
+        "lastModified": 1747486745,
+        "narHash": "sha256-ngQ+iTHmBJkEbsjYfCWTJdV8gHhOCTkV8K0at6Y+YHI=",
         "owner": "YalTeR",
         "repo": "niri",
-        "rev": "6c9705dd4b2eaba25f024d1a3efd7943fd393632",
+        "rev": "ae89cb6017668f3a81ccd92461cbbc70ab8377d0",
         "type": "github"
       },
       "original": {

home/lib/wallpaper/buildWallpaper.nix

@@ -129,7 +129,7 @@ let
         name = "Pictures/Wallpapers/generated/${name}-blurred.jpg";
         value = {
           source = pkgs.runCommand "${name}-blurred.jpg" { } ''
-            ${pkgs.imagemagick}/bin/magick ${path} -blur 0x15 $out
+            ${pkgs.imagemagick}/bin/magick ${path} -blur 0x30 $out
           '';
         };
       };

home/programs/desktop/default.nix

@@ -10,6 +10,7 @@
   ];
   home.packages = with pkgs; [
     swww
+    swaybg
     kanshi
     wlsunset
     wayneko

home/programs/desktop/niri/autostart.nix

@@ -59,7 +59,7 @@ let
 
 
     def set_wallpaper(monitor, wallpaper):
-        subprocess.run(
+        subprocess.Popen(
             [
                 "swww",
                 "img",
@@ -74,6 +74,20 @@ let
         )
 
 
+    def set_backdrop_wallpaper(monitor, wallpaper):
+        subprocess.Popen(
+            [
+                "swaybg",
+                "-o",
+                monitor,
+                "-i",
+                wallpaper,
+                "-m",
+                "fill",
+            ]
+        )
+
+
     def get_wallpaper_name(wallpaper_path):
         current_wallpaper_is_blurred = "blurred" in wallpaper_path
         if current_wallpaper_is_blurred:
@@ -92,14 +106,15 @@ let
             return
         wallpaper_name = get_wallpaper_name(current_wallpaper)
         active_workspace_is_empty = active_workspace["active_window_id"] is None
-        if active_workspace_is_empty:
-            wallpaper = os.path.join(wallpapers_path, f"{wallpaper_name}.jpg")
-        else:
-            wallpaper = os.path.join(wallpapers_path, f"{wallpaper_name}-blurred.jpg")
+        wallpaper = os.path.join(wallpapers_path, f"{wallpaper_name}.jpg")
+        blurred_wallpaper = os.path.join(wallpapers_path, f"{wallpaper_name}-blurred.jpg")
+        if not active_workspace_is_empty:
+            wallpaper = blurred_wallpaper
         real_wallpaper = os.path.realpath(wallpaper)
         if current_wallpaper == real_wallpaper and not init:
             return
         set_wallpaper(active_workspace_monitor, wallpaper)
+        set_backdrop_wallpaper(active_workspace_monitor, blurred_wallpaper)
 
 
     def change_wallpaper(init=False):

home/programs/desktop/niri/override-config.nix

@@ -5,19 +5,21 @@ let
     # kdl
     ''
       overview {
-          zoom 0.36
-          backdrop-color "${base02}"
-        }
+        zoom 0.36
+        backdrop-color "${base02}"
+      }
+      layer-rule {
+        match namespace="wallpaper"
+        place-within-backdrop true
+      }
     '';
   finalNiriConfig =
     builtins.replaceStrings
       [
         "output \"${config.lib.monitors.mainMonitorName}\" {"
-        "background-color \"${base01}\""
       ]
       [
         "output \"${config.lib.monitors.mainMonitorName}\" {\nfocus-at-startup"
-        "background-color \"${base01}\""
       ]
       config.programs.niri.finalConfig
     + "\n"