diff --git a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/layoutnodeinstance.cpp b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/layoutnodeinstance.cpp
index e92b6a9a51b..6a89d713ce7 100644
--- a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/layoutnodeinstance.cpp
+++ b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/layoutnodeinstance.cpp
@@ -25,6 +25,8 @@
 
 #include "layoutnodeinstance.h"
 
+#include <QCoreApplication>
+
 namespace QmlDesigner {
 namespace Internal {
 
diff --git a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/objectnodeinstance.cpp b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/objectnodeinstance.cpp
index 857a016a5ea..102e3851d04 100644
--- a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/objectnodeinstance.cpp
+++ b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/objectnodeinstance.cpp
@@ -28,6 +28,7 @@
 #include <enumeration.h>
 #include <qmlprivategate.h>
 
+#include <QDebug>
 #include <QEvent>
 #include <QQmlContext>
 #include <QQmlError>
diff --git a/src/plugins/debugger/analyzer/analyzermanager.h b/src/plugins/debugger/analyzer/analyzermanager.h
index 3bddc13dd61..cafcbf76613 100644
--- a/src/plugins/debugger/analyzer/analyzermanager.h
+++ b/src/plugins/debugger/analyzer/analyzermanager.h
@@ -63,6 +63,7 @@ DEBUGGER_EXPORT void showCannotStartDialog(const QString &toolName);
 
 // Register a tool for a given start mode.
 DEBUGGER_EXPORT void registerPerspective(const QByteArray &perspectiveId, const Utils::Perspective *perspective);
+DEBUGGER_EXPORT void setPerspectiveEnabled(const QByteArray &perspectiveId, bool enable);
 DEBUGGER_EXPORT void registerToolbar(const QByteArray &perspectiveId, const Utils::ToolbarDescription &desc);
 
 DEBUGGER_EXPORT void enableMainWindow(bool on);
diff --git a/src/plugins/debugger/debuggermainwindow.cpp b/src/plugins/debugger/debuggermainwindow.cpp
index 870ab8c38b5..343f5f63700 100644
--- a/src/plugins/debugger/debuggermainwindow.cpp
+++ b/src/plugins/debugger/debuggermainwindow.cpp
@@ -50,6 +50,7 @@
 #include <QHBoxLayout>
 #include <QMenu>
 #include <QStackedWidget>
+#include <QStandardItemModel>
 #include <QToolButton>
 
 using namespace Debugger;
@@ -142,6 +143,16 @@ void DebuggerMainWindow::onModeChanged(Core::Id mode)
     }
 }
 
+void DebuggerMainWindow::setPerspectiveEnabled(const QByteArray &perspectiveId, bool enabled)
+{
+    const int index = m_perspectiveChooser->findData(perspectiveId);
+    QTC_ASSERT(index != -1, return);
+    auto model = qobject_cast<QStandardItemModel*>(m_perspectiveChooser->model());
+    QTC_ASSERT(model, return);
+    QStandardItem *item = model->item(index, 0);
+    item->setFlags(enabled ? item->flags() | Qt::ItemIsEnabled : item->flags() & ~Qt::ItemIsEnabled );
+}
+
 void DebuggerMainWindow::resetCurrentPerspective()
 {
     loadPerspectiveHelper(m_currentPerspectiveId, false);
diff --git a/src/plugins/debugger/debuggermainwindow.h b/src/plugins/debugger/debuggermainwindow.h
index 52d6235f558..8710d2bff33 100644
--- a/src/plugins/debugger/debuggermainwindow.h
+++ b/src/plugins/debugger/debuggermainwindow.h
@@ -136,6 +136,8 @@ public:
 
     void onModeChanged(Core::Id mode);
 
+    void setPerspectiveEnabled(const QByteArray &perspectiveId, bool enabled);
+
 private:
     QDockWidget *registerDockWidget(const QByteArray &dockId, QWidget *widget);
     void loadPerspectiveHelper(const QByteArray &perspectiveId, bool fromStoredSettings = true);
diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index 3cb7b11f019..13e04e39dc9 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -3569,6 +3569,11 @@ void registerPerspective(const QByteArray &perspectiveId, const Perspective *per
     dd->m_mainWindow->registerPerspective(perspectiveId, perspective);
 }
 
+void setPerspectiveEnabled(const QByteArray &perspectiveId, bool enabled)
+{
+    dd->m_mainWindow->setPerspectiveEnabled(perspectiveId, enabled);
+}
+
 void selectPerspective(const QByteArray &perspectiveId)
 {
     if (dd->m_mainWindow->currentPerspective() == perspectiveId)
diff --git a/src/plugins/qbsprojectmanager/qbsprojectmanager.qbs b/src/plugins/qbsprojectmanager/qbsprojectmanager.qbs
index fe7108e8c36..c732facdf4b 100644
--- a/src/plugins/qbsprojectmanager/qbsprojectmanager.qbs
+++ b/src/plugins/qbsprojectmanager/qbsprojectmanager.qbs
@@ -46,6 +46,7 @@ QtcPlugin {
 
     cpp.defines: base.concat([
         'QML_BUILD_STATIC_LIB',
+        'QBS_ENABLE_PROJECT_FILE_UPDATES', // TODO: Take from installed qbscore module
         'QBS_INSTALL_DIR="'
                 + (project.useExternalQbs
                        ? FileInfo.fromWindowsSeparators(project.qbs_install_dir)
diff --git a/src/plugins/qmljseditor/qmljsoutline.cpp b/src/plugins/qmljseditor/qmljsoutline.cpp
index 9cd3e78eae6..435725c0b27 100644
--- a/src/plugins/qmljseditor/qmljsoutline.cpp
+++ b/src/plugins/qmljseditor/qmljsoutline.cpp
@@ -125,12 +125,12 @@ void QmlJSOutlineWidget::setEditor(QmlJSEditorWidget *editor)
 
     m_filterModel->setSourceModel(m_editor->qmlJsEditorDocument()->outlineModel());
     m_treeView->expandAll();
-    connect(m_editor->qmlJsEditorDocument()->outlineModel(), &QAbstractItemModel::modelAboutToBeReset, [this]() {
-        if (m_treeView && m_treeView->selectionModel())
+    connect(m_editor->qmlJsEditorDocument()->outlineModel(), &QAbstractItemModel::modelAboutToBeReset, m_treeView, [this]() {
+        if (m_treeView->selectionModel())
             m_treeView->selectionModel()->blockSignals(true);
     });
-    connect(m_editor->qmlJsEditorDocument()->outlineModel(), &QAbstractItemModel::modelReset, [this]() {
-        if (m_treeView && m_treeView->selectionModel())
+    connect(m_editor->qmlJsEditorDocument()->outlineModel(), &QAbstractItemModel::modelReset, m_treeView, [this]() {
+        if (m_treeView->selectionModel())
             m_treeView->selectionModel()->blockSignals(false);
     });