I've read BingWall is a Bing Wallpaper App for Ubuntu (on OMG! Ubuntu!).
Then I installed the software
bing-wall from a snap:
sudo snap install bing-wall
Then this app asked me to install the Wonderwall app.
So I first try to install it from a snap from https://snapcraft.io/wonderwall.
Then I see it don't work so I try to reinstall it. Then I try to uninstall
bing-wall then reinstall
But Wonderwall doesn't work. I can't change my wallpaper with that app.
I've asked the developer of the app, and he asked me that if my distro works with
gsettings it will work, but it doesn't.
edit : When i use
gsettings set org.gnome.desktop.background picture-uri it tells me :
wich is the picture file i choosed over wonderwall, but my desktop background wallpaper show the old file i choosed with the appearance/background menu.