> (future "show HN - scp replacement written in $FANCY_LANGUAGE that works even when sftp is disabled")

Too late:

https://en.wikipedia.org/wiki/Files_transferred_over_shell_p...

In KDE this is implemented as a standard protocol handler ("ioslave") and you can access it from most KDE apps using URLs like "fish://user@server/":

https://docs.kde.org/trunk5/en/kio-extras/kioslave5/fish/ind...