Automatically uninstall unneeded virtual components

Change-Id: Ifbbfec4449a9f5b0a79269fc7ddfcc1780e762e5
Task-number: QTBUG-76210
Reviewed-by: Katja Marttila <katja.marttila@qt.io>

1 files changed, 26 insertions, 0 deletions

diff --git a/src/libs/installer/uninstallercalculator.cpp b/src/libs/installer/uninstallercalculator.cpp
index 6fd63d499..4823af012 100644
--- a/src/libs/installer/uninstallercalculator.cpp
+++ b/src/libs/installer/uninstallercalculator.cpp
@@ -125,6 +125,32 @@ void UninstallerCalculator::appendComponentsToUninstall(const QList<Component*>
 
     if (!autoDependOnList.isEmpty())
         appendComponentsToUninstall(autoDependOnList);
+
+    QList<Component*> unneededVirtualList;
+    // Check for virtual components without dependees
+    foreach (Component *component, m_installedComponents) {
+        if (component->isInstalled() && component->isVirtual() && !m_componentsToUninstall.contains(component)) {
+            // Components with auto dependencies were handled in the previous step
+            if (!component->autoDependencies().isEmpty())
+                continue;
+            if (component->forcedInstallation())
+                continue;
+
+            bool required = false;
+            PackageManagerCore *core = component->packageManagerCore();
+            foreach (Component *dependee, core->dependees(component)) {
+                if (dependee->isInstalled() && !m_componentsToUninstall.contains(dependee)) {
+                    required = true;
+                    break;
+                }
+            }
+            if (!required)
+                unneededVirtualList.append(component);
+        }
+    }
+
+    if (!unneededVirtualList.isEmpty())
+        appendComponentsToUninstall(unneededVirtualList);
 }
 
 } // namespace QInstaller