D11583: Add platform detection and adjustment to kded

[Martin Flöser]

graesslin created this revision.
graesslin added reviewers: Frameworks, Plasma, apol.
Restricted Application added a project: Frameworks.
graesslin requested review of this revision.

REVISION SUMMARY
  Current Plasma/master branch does no longer set the QT_QPA_PLATFORM env
  variable on Wayland. As kded is a process tightly connected to the
  workspace it also needs to pick wayland QPA in a Wayland session. This
  change brings in the adjustment from plasma-workspace and ensures that
  kded works correctly on any Wayland desktop environment, being it
  Plasma, GNOME or Weston.

TEST PLAN
  Restarted session, kscreen got layout correctly

REPOSITORY
  R297 KDED

BRANCH
  platform-detection

REVISION DETAIL
  https://phabricator.kde.org/D11583

AFFECTED FILES
  src/kded.cpp

To: graesslin, #frameworks, #plasma, apol
Cc: michaelh, ngraham
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