Old farts may remember root-tail. With it you can print text directly to X11 root window.

Is there a similar tool for #wayland ?

@ekari What kinda Wayland environment you refering to here? Gnome, KDE, wlroots?

I don't know of any particular- but I'm sure you could (worst case) butcher something together by piping text into an image generator and piping that to your wallpaper program

@daniel #SailfishOS would be the environment. I thought about butchering the wallpaper, but I suspect I'd have to tell the OS to redraw it. That might be doable.

I was secretly hoping for a nice python library or something similar :)

@ekari @daniel updating the wallpaper on a loop is your best bet sadly, wayland was made to get away from these neat hacks and segregate everything into it's own little conversation

@i @ekari On a Wlroots based thing, you could hopefully just find a wallpaper program (i.e. like swaybg) that supports text rendering

SailfishOS I have no idea about but I doubt there's a wayland standard way, as said above, do this