Ciao @pmozzati, welcome to the community. Please take a minute to glance over the #start-here here posts if you haven’t already.
I’m not a Flatpak expert, and I use some Flatpak applications installed and updated via gnome-software.
If I go to the command line, I’m unable to find org.kde.Platform.Locale
$ flatpak search org.kde.Platform.Locale
No matches found
Widening the search this is my result
$ flatpak search org.kde.Platform
Name Description Application ID Version Branch Remotes
KDE Application Platform version master Shared libraries used by KDE applications org.kde.Platform 5.9 flathub
KDE Application Platform Shared libraries used by KDE applications org.kde.Platform 5.12 flathub
KDE Application Platform version master Shared libraries used by KDE applications org.kde.Platform 5.11 flathub
QGnomePlatform Qt Platform Theme aimed to accommodate GNOME settings org.kde.PlatformTheme.QGnomePlatform 5.9 flathub
QGnomePlatform Qt Platform Theme aimed to accommodate GNOME settings org.kde.PlatformTheme.QGnomePlatform 5.12 flathub
QGnomePlatform Qt Platform Theme aimed to accommodate GNOME settings org.kde.PlatformTheme.QGnomePlatform 5.11 flathub
QGnomePlatform Qt Platform Theme aimed to accommodate GNOME settings org.kde.PlatformTheme.QGnomePlatform 5.10 flathub
Thanks for your greetings @alciregi. I run the following:
flatpak list | grep Platform
to list installed platform, getting the result:
$ flatpak list | grep Platform
KDE Application Platform version master org.kde.Platform 5.10 flathub system
KDE Application Platform version master org.kde.Platform 5.9 flathub system
QGnomePlatform org.kde.PlatformTheme.QGnomePlatform 5.9 flathub system
Instead running the command you wrote:
flatpak search org.kde.Platform
gave me the same output.
So I don’t actually know where this package comes from.
an it showed me the Qt 5.10 version. I cenfirmed but I coudn’t do that cause flatpak said to me that it was used by net.nightly.Scribus (or so).
So I removed Scribus first than the Platform.
Hey, would like to provide more information since this post is quite high on google.
Not sure if this is still the case, but flatpak doesn’t seem to remove old runtime so it might happen that you have no app that uses the runtime yet you still see the deprecation warning. If that’s the case, you can remove it manually or run this command that will do automatically remove runtimes that aren’t in use anymore: