only install largest size to remove dependency

flake.nix

@@ -50,13 +50,8 @@
           ln -s "${desktopItem}/share/applications" $out/share/applications
 
           # Install icons
-          mkdir -p $out/share/icons/
-          for dimension in 128 256 512; do
-              dimensions=''${dimension}x''${dimension}
-              mkdir -p $out/share/icons/hicolor/$dimensions/apps
-
-              "${pkgs.imagemagick}/bin/convert" ${icon} -resize $dimensions $out/share/icons/hicolor/$dimensions/apps/${name}.png
-          done
+          mkdir -p $out/share/icons/1024x1024/apps
+          ln -s ${icon} $out/share/icons/1024x1024/apps/${name}.png
         '';
       };
     };