There's probably an old X11 app from the 1980s that could be executed through xwayland somewhere.
I can't even run a binary from one Linux distro to the other, let alone one from a random Unix from the 80s. If a rebuild from source is allowed (which would need to allow modifications to the build system) that's a completely different game.
loading story #50249502
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As an unmodified binary from the 1980s on current Linux/Unix? Highly unlikely.
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Just used xev today (bought new mouse few days ago and it wasn't responding in chrome so I wanted to be sure).
xwm from 1984 and twm from 1989 will still execute on Xorg today.
And if you want to run them on Wayland, Worg will do that for you. https://github.com/jmalcolm137/Worg
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