4 files changed, 16 insertions, 2 deletions
diff --git a/src/libs/installer/constants.h b/src/libs/installer/constants.h
index b871e6209..012d0cc53 100644
--- a/src/libs/installer/constants.h
+++ b/src/libs/installer/constants.h
@@ -92,6 +92,7 @@ static const QLatin1String scWizardDefaultHeight("WizardDefaultHeight");
 static const QLatin1String scUrlQueryString("UrlQueryString");
 static const QLatin1String scProductUUID("ProductUUID");
 static const QLatin1String scAllUsers("AllUsers");
+static const QLatin1String scSupportsModify("SupportsModify");
 
 const char scRelocatable[] = "@RELOCATABLE_PATH@";
 
diff --git a/src/libs/installer/packagemanagercore_p.cpp b/src/libs/installer/packagemanagercore_p.cpp
index 76294ec69..019bbfe78 100644
--- a/src/libs/installer/packagemanagercore_p.cpp
+++ b/src/libs/installer/packagemanagercore_p.cpp
@@ -2035,7 +2035,13 @@ void PackageManagerCorePrivate::registerMaintenanceTool()
     const quint64 limit = std::numeric_limits<quint32>::max(); // maximum 32 bit value
     if (estimatedSizeKB <= limit)
         settings.setValue(QLatin1String("EstimatedSize"), static_cast<quint32>(estimatedSizeKB));
-    settings.setValue(QLatin1String("NoModify"), 0);
+
+    const bool supportsModify = m_core->value(scSupportsModify, scTrue) == scTrue;
+    if (supportsModify)
+        settings.setValue(QLatin1String("NoModify"), 0);
+    else
+        settings.setValue(QLatin1String("NoModify"), 1);
+
     settings.setValue(QLatin1String("NoRepair"), 1);
 #endif
 }
diff --git a/src/libs/installer/settings.cpp b/src/libs/installer/settings.cpp
index 3e933574d..f849404f8 100644
--- a/src/libs/installer/settings.cpp
+++ b/src/libs/installer/settings.cpp
@@ -261,7 +261,7 @@ Settings Settings::fromFileAndPrefix(const QString &path, const QString &prefix,
                 << scWizardDefaultWidth << scWizardDefaultHeight
                 << scRepositorySettingsPageVisible << scTargetConfigurationFile
                 << scRemoteRepositories << scTranslations << scUrlQueryString << QLatin1String(scControlScript)
-                << scCreateLocalRepository << scInstallActionColumnVisible;
+                << scCreateLocalRepository << scInstallActionColumnVisible << scSupportsModify;
 
     Settings s;
     s.d->m_data.insert(scPrefix, prefix);
@@ -743,3 +743,8 @@ QString Settings::controlScript() const
 {
     return d->m_data.value(QLatin1String(scControlScript)).toString();
 }
+
+bool Settings::supportsModify() const
+{
+    return d->m_data.value(scSupportsModify, true).toBool();
+}
diff --git a/src/libs/installer/settings.h b/src/libs/installer/settings.h
index 6c437a72d..9c0920e66 100644
--- a/src/libs/installer/settings.h
+++ b/src/libs/installer/settings.h
@@ -157,6 +157,8 @@ public:
 
     QString controlScript() const;
 
+    bool supportsModify() const;
+
 private:
     class Private;
     QSharedDataPointer<Private> d;