A theme switcher to automatically change application themes based on KDE global theme.

Currently, only alacritty terminal emulator and micro text editor are supported.

theme-switcher.mp4

Alacritty theme syncing with the global theme.

You can define custom KDE theme - app theme mappings as you wish.

Installation

For traditional Linux users

For traditional Linux users

1. Download Nushell v0.104 from here.
2. Clone this repository:

git clone https://github.com/rayanamal/kde-app-dynamic-theme.git

3. Extract the binary (the file named 'nu') from the archive, and put it somewhere, preferably into the repo you just cloned.
4. Open theme-switcher.nu in your text editor.

• Edit the constants at the start if you need to, as explained in the file.
• Edit the KDE theme -> app theme mappings to match your preferences.

5. Open theme-switcher.service file in your editor, and put in the location of the nu binary and the script, as explained.
6. Create ~/.config/systemd/user/ directory if it doesn't exist.
7. Put theme-switcher.path and theme-switcher.service into ~/.config/systemd/user/:

mv theme-switcher.path theme-switcher.service ~/.config/systemd/user/

8. Run these commands:

systemctl --user daemon-reload
systemctl --user enable theme-switcher.path
systemctl --user start theme-switcher.path

9. Enjoy. If it didn't work for you, open an issue, and I'll do my best.

For NixOS users

For NixOS users

1. Download theme-switcher.nu script.

curl -LO https://raw.githubusercontent.com/rayanamal/kde-app-dynamic-theme/refs/heads/main/theme-switcher.nu

2. Open theme-switcher.nu in your text editor.

• Edit the constants at the start if you need to, as explained in the file.
• Edit the KDE theme -> app theme mappings to match your preferences.

3. Add the below to your configuration.nix. Fix the part in FIXME:

  systemd.user.paths.theme-switcher = {
   	wantedBy = [ "default.target" ];
   	pathConfig.PathChanged="%h/.config/kdeglobals";
  };
  
  systemd.user.services.theme-switcher = {
    ## FIXME fix the path to point to the real location of the script.
   	script = "/home/username/.config/nushell/scripts/theme-switcher.nu";
   	path = [ pkgs.nushell ];
  };

4. Enjoy. If it didn't work for you, open an issue, and I'll do my best.

Note that this doesn't guarantee nu version will stay same, and thus may break in the future.

Contributing

I welcome contributions.