Left unity and right unity are both mythical unicorns that do not exist except for momentary periods in history.
Even amongst various “leninist” ideologies there are significant strategic differences and different ideas for what socialism itself looks like.
There are like, 100s of different Nazi, fascist, and Christian-Nationalist groups in the US. They don’t get along either, even if their ideologies have considerable overlap.
Both sides will temporarily put aside their differences to have protests, rallys, etc, but those are temporary.
Are you telling me I’m not just supposed to type sudo apt install ./thing-that-i-wanna-install?