Article 4RPNK How to install Flatpak in Deepin 15.11?

How to install Flatpak in Deepin 15.11?

by
drpeppercan
from LinuxQuestions.org on (#4RPNK)
I just tried it but is not looking very promising:

First I ran this command line:
Code:sudo apt-get install software-properties-commonThen I tried to add the Flatpak repo:
Code:sudo add-apt-repository ppa:alexlarsson/flatpak
Traceback (most recent call last):
File "/usr/bin/add-apt-repository", line 95, in <module>
sp = SoftwareProperties(options=options)
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 109, in __init__
self.reload_sourceslist()
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 599, in reload_sourceslist
self.distro.get_sources(self.sourceslist)
File "/usr/lib/python3/dist-packages/aptsources/distro.py", line 93, in get_sources
(self.id, self.codename))
aptsources.distro.NoDistroTemplateException:
Error: could not find a distribution template for Deepin/stableThat error seems to say that this is the end of the road. There no Flatpak available for Deepin, is that it?

Thanks
----------------------------------------------------
Update:
I just recalled that I already have Flatpak installed actually. Except it's an older version. Reason why I cannot install Shotcut from the Flatpak Hub (it tells me it has to be the latest version).
I don't remember how I got Flatpak installed on the first place, unfortunately.
I guess my question really is: How to update Flatpak in Deepin 15.11?latest?d=yIl2AUoC8zA latest?i=ps4JzCapFXU:dPiv0DZsres:F7zBnMy latest?i=ps4JzCapFXU:dPiv0DZsres:V_sGLiP latest?d=qj6IDK7rITs latest?i=ps4JzCapFXU:dPiv0DZsres:gIN9vFwps4JzCapFXU
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