libinput/connection: Don't hardcode seat0 anymore

Summary: use a new function to get the logind, instead of assuming seat0

Test Plan: kwin still starts

Reviewers: #kwin, davidedmundson

Reviewed By: davidedmundson

Subscribers: davidedmundson, rkflx, graesslin, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D9552

libinput/connection.cpp

@@ -135,9 +135,8 @@ Connection *Connection::create(QObject *parent)
             s_context = nullptr;
             return nullptr;
         }
-        // TODO: don't hardcode seat name
-        if (!s_context->assignSeat("seat0")) {
-            qCWarning(KWIN_LIBINPUT) << "Failed to assign seat seat0";
+        if (!s_context->assignSeat(LogindIntegration::self()->seat().toUtf8().constData())) {
+            qCWarning(KWIN_LIBINPUT) << "Failed to assign seat" << LogindIntegration::self()->seat();
             delete s_context;
             s_context = nullptr;
             return nullptr;