cargo build --release --manifest-path plugins/theme-detection/Cargo.toml

xfetch plugin install theme-detection

{
  "info_plugins": [
    {
      "plugin": "theme-detection"
    }
  ],
  "modules": [
    "os",
    "kernel",
    "plugin:theme-detection",
    "shell",
    "cpu",
    "memory"
  ]
}

The theme-detection plugin does not require any arguments.

 GTK Theme: Adwaita-dark (dark)
   Icons: Adwaita
   Cursor: Adwaita
   Font: Cantarell 11

 GTK: Breeze (light)
   Plasma: breeze-dark
   Colors: BreezeDark
   Icons: breeze-dark
   Cursor: breeze_cursors

  Windows Theme: Dark
  Accent: #00B9FF

1. xfetch sends a JSON request with kind: "info_provider".
2. On Linux/macOS the plugin reads GTK settings via gsettings get org.gnome.desktop.interface; KDE Plasma themes are read from ~/.config/plasmarc and ~/.config/kdeglobals.
3. On Windows it reads the registry: light/dark mode from HKCU\...\Themes\Personalize\AppsUseLightTheme and the accent color from HKCU\...\DWM\ColorizationColor.
4. The plugin returns a JSON response with the formatted lines.
5. xfetch displays them under the plugin:theme-detection module key.

• GTK detection works on any desktop using gsettings (GNOME, Budgie, Cinnamon, etc.).
• KDE detection reads from standard Plasma config files.
• If both GTK and KDE are detected, both are shown (GTK listed first).
• Uses prefer-dark/prefer-light color scheme from GNOME for dark/light detection.