fix(cursor): get rid of gtk4 warning and refactor

scopedPackages/dracula/gtk.nix

@@ -6,4 +6,39 @@
 pkgs.dracula-theme.overrideAttrs (o: {
   version = o.version + "+" + gtk-theme-src.shortRev;
   src = gtk-theme-src;
+
+  # Generate hyprcursor theme
+  buildInputs =
+    (o.buildInputs or [])
+    ++ (builtins.attrValues {
+      inherit
+        (pkgs)
+        hyprcursor
+        xcur2png
+        ;
+    });
+
+  preInstall = ''
+    ${o.preInstall or ""}
+
+    mkdir -p $out/share/icons/Dracula-cursors
+
+    cd ./kde/cursors
+
+    hyprcursor-util --extract ./Dracula-cursors
+
+    # this creates a symlink to 'theme_Extracted Theme' for some reason
+    hyprcursor-util --create ./extracted_Dracula-cursors
+    mv 'theme_Extracted Theme' ./extracted
+
+    cat <<EOF > ./extracted/manifest.hl
+    name = Dracula-cursors
+    description = Automatically extracted with hyprcursor-util
+    version = 0.1
+    cursors_directory = hyprcursors
+    EOF
+
+    mv ./extracted/* $out/share/icons/Dracula-cursors/
+    cd ../..
+  '';
 })