That's basically what I'm doing, but the scroll performance was not good.

If text-scroll performance is an issue on a computer after the year 2000 or so, your terminal/app/lib is doing something wrong. Even the very atrocious windows terminal performance has been fixed by this point.

This wasn't a terminal issue, this was a TUI issue with Textual.

Edit: actually to clarify - it was probably me using it wrong, but I didn't have any good examples of what I was trying to do.

The work-around I was referring to, doesn't require any software besides a xterm-style terminal and the tail command.

For my own reasons I needed a TUI - I’m aware that part of what I wanted to do could be replicated with tmux and some tails. It wasn’t _just_ logging though, I had good reason to want a python TUI.