D23306: Add AppStream metadata file

[Nathaniel Graham]

ngraham added a comment.


  In D23306#515589 <https://phabricator.kde.org/D23306#515589>, @mak wrote:
  
  > In D23306#515577 <https://phabricator.kde.org/D23306#515577>, @ngraham wrote:
  >
  > > Adjust according to review comments
  >
  >
  > This will work. I would change `<name>System Settings</name>` to `<name> KDE System Settings</name>` or `<name>Plasma System Settings</name>`, just like GNOME sets a name like "GNOME Videos" instead of "Videos" in their metadata. Otherwise this name will confuse users of GNOME, I guess.
  
  
  This gets at the original reason why System Settings has two .desktop files: one adds "KDE" onto the beginning of the name when it's not run in Plasma. Ideally we would want the same thing in AppStream:
  
  - Show "KDE Plasma System Settings" in search and browse lists, where the fact that it's for KDE Plasma is otherwise not apparent
  - Show "System Settings" in Discover's Updates lists, where the fact that it's for KDE Plasma is implied and redundant because you're seeing it in Plasma's software updater
  
  Is such a thing possible?
  
  > You'll also highly likely want to set `compulsory_for_desktop` ( https://www.freedesktop.org/software/appstream/docs/chap-CollectionData.html#tag-ct-compulsory_for_desktop ) to prevent this app to be removable on Plasma.
  >  So adding
  > 
  >   <compulsory_for_desktop>KDE</compulsory_for_desktop>
  >   <compulsory_for_desktop>Plasma</compulsory_for_desktop>
  > 
  > 
  > will do the trick (AppStream recognizes "Plasma", but the desktop is actually known as "KDE" everywhere in Freedesktop, so just using "KDE" would probably be sufficient and compatible with everything. Having "Plasma" as well won't hurt though)
  >  Ypu may want FSFAP <https://spdx.org/licenses/FSFAP.html> as `metadata_license` as it's much shorter than CC0 and mixes well with GPL. However that's a personal choice and not required for anything. CC0 would work just fine.
  
  Thanks, will do.

REPOSITORY
  R124 System Settings

REVISION DETAIL
  https://phabricator.kde.org/D23306

To: ngraham, apol, mak, #plasma
Cc: kossebau, plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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