From ba54e8b798254a857a5fe011a592fc7a7cfde444 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=AD?= <mvdan@mvdan.cc>
Date: Sun, 9 Aug 2015 22:47:48 -0700
Subject: [PATCH] SystemInstaller: don't try to remove system apps without
 updates

---
 .../src/org/fdroid/fdroid/installer/SystemInstaller.java | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/F-Droid/src/org/fdroid/fdroid/installer/SystemInstaller.java b/F-Droid/src/org/fdroid/fdroid/installer/SystemInstaller.java
index 0a1cd08e2..f6df282fa 100644
--- a/F-Droid/src/org/fdroid/fdroid/installer/SystemInstaller.java
+++ b/F-Droid/src/org/fdroid/fdroid/installer/SystemInstaller.java
@@ -193,7 +193,16 @@ public class SystemInstaller extends Installer {
             return;
         }
 
+        final boolean isSystem = ((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
         final boolean isUpdate = ((appInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0);
+
+        if (isSystem && !isUpdate) {
+            // Cannot remove system apps unless we're uninstalling updates
+            mCallback.onError(InstallerCallback.OPERATION_DELETE,
+                    InstallerCallback.ERROR_CODE_OTHER);
+            return;
+        }
+
         int messageId;
         if (isUpdate) {
             messageId = R.string.uninstall_update_confirm;