{ enable = true; defaultApplications = { "application/octet-stream" = [ "firefox.desktop" ]; "application/pdf" = [ "firefox.desktop" ]; "application/x-bittorrent" = [ "deluge.desktop" ]; "application/x-extension-htm" = [ "firefox.desktop" ]; "application/x-extension-html" = [ "firefox.desktop" ]; "application/x-extension-shtml" = [ "firefox.desktop" ]; "application/x-extension-xhtml" = [ "firefox.desktop" ]; "application/x-extension-xht" = [ "firefox.desktop" ]; "application/xhtml+xml" = [ "firefox.desktop" ]; "image/jpeg" = [ "org.gnome.eog.desktop" ]; "image/png" = [ "org.gnome.eog.desktop" ]; "message/rfc822" = [ "userapp-Thunderbird.desktop" ]; "text/html" = [ "firefox.desktop" ]; "text/plain" = [ "firefox.desktop" ]; "video/mp4" = [ "vlc.desktop" ]; "x-scheme-handler/chrome" = [ "firefox.desktop" ]; "x-scheme-handler/ftp" = [ "firefox.desktop" ]; "x-scheme-handler/http" = [ "firefox.desktop" ]; "x-scheme-handler/https" = [ "firefox.desktop" ]; "x-scheme-handler/mailto" = [ "userapp-Thunderbird.desktop" ]; "x-scheme-handler/msteams" = [ "teams.desktop" ]; "x-scheme-handler/tg" = [ "userapp-Telegram Desktop-JBKFU0.desktop" ]; }; }