treewide: blur regreet wallpaper

lib/default.nix

@@ -1,4 +1,4 @@
-{lib, ...}: let
+let
   # convert rrggbb hex to rgba(r, g, b, a)
   rgba = c: let
     r = toString (hexToDec (builtins.substring 0 2 c));
@@ -7,7 +7,7 @@
   in "rgba(${r}, ${g}, ${b}, .5)";
 
   # Helper function to convert hex color to decimal RGB values
-  hexToDec = v: let
+  hexToDec = lib: v: let
     hexToInt = {
       "0" = 0;
       "1" = 1;
@@ -38,52 +38,15 @@
     (lib.imap (k: v: hexToInt."${v}" * (pow 16 (builtins.length chars - k - 1))) chars);
 
   # Power function for exponentiation
-  pow = base: exponent: lib.foldl' (acc: _: acc * base) 1 (lib.range 1 exponent);
+  pow = lib: base: exponent: lib.foldl' (acc: _: acc * base) 1 (lib.range 1 exponent);
 
-  # Converts hex color to KDE color format
-  colorToKde = name: hexColor: let
-    r = hexToDec (builtins.substring 0 2 hexColor);
-    g = hexToDec (builtins.substring 2 2 hexColor);
-    b = hexToDec (builtins.substring 4 2 hexColor);
-  in "[${name}]\nColor=${toString r},${toString g},${toString b}\n";
-
-  # Mapping base16 colors to KDE color scheme sections
-  schemeToKonsole = scheme: let
-    inherit (scheme) palette;
-
-    colorMap = {
-      base00 = ["Background" "BackgroundFaint" "BackgroundIntense"];
-      base01 = ["Color0"];
-      base02 = ["Color0Intense"];
-      base04 = ["Color4"];
-      base05 = ["Foreground" "ForegroundFaint" "ForegroundIntense"];
-      base06 = ["Color7"];
-      base07 = ["Color7Intense"];
-      base08 = ["Color1" "Color1Intense"];
-      base09 = ["Color1Intense"];
-      base0A = ["Color3" "Color3Intense"];
-      base0B = ["Color2" "Color2Intense"];
-      base0C = ["Color6" "Color6Intense"];
-      base0D = ["Color4" "Color4Intense"];
-      base0E = ["Color5" "Color5Intense"];
-    };
-
-    colorSections = lib.concatStringsSep "\n" (lib.attrsets.mapAttrsToList
-      (name: value:
-        lib.concatMapStrings (slot: colorToKde slot value) (colorMap.${name} or []))
-      palette);
-  in
-    lib.concatStringsSep "\n" [
-      "[General]"
-      "Description=${scheme.name}"
-      "Opacity=1"
-      "Wallpaper="
-      colorSections
-    ];
-
-  # Create a KDE konsole color scheme from base16 colors
-  mkKonsoleColorScheme = pkgs: scheme:
-    pkgs.writeText "${scheme.name}.colorscheme" (schemeToKonsole scheme);
-in {
-  inherit mkKonsoleColorScheme rgba;
+  blurImage = pkgs: path:
+    pkgs.runCommand "${builtins.baseNameOf path}-blurred" {
+      buildInputs = [pkgs.imagemagick];
+    }
+    ''
+      magick ${path} -gaussian-blur 0x12 "$out"
+    '';
+in {
+  inherit blurImage rgba;
 }

system/services/greetd.nix

@@ -2,10 +2,12 @@
   inputs,
   config,
   lib,
+  lib',
   pkgs,
   ...
 }: let
   inherit (lib) getExe evalModules;
+  inherit (lib') blurImage;
   inherit (inputs) niri;
 in {
   services.greetd = let
@@ -72,7 +74,8 @@ in {
     };
     settings = {
       background = {
-        path = config.theme.wallpaper;
+        path = blurImage pkgs config.theme.wallpaper;
+
         fit = "Fill";
       };
       GTK = {