@gmgarciam Chromium, the browser base that Opera is built on, is indeed open source. Opera, however, is not. Some small parts of it have been made partially open source, but Opera GX is not open source, so no building from source unfortunately. (https://forums.opera.com/topic/43712/is-the-opera-open-source) If it was open source, we would see Linux builds all over the place by now.