1 files changed, 111 insertions, 0 deletions
diff --git a/debian/patches/allow-empty-packages.patch b/debian/patches/allow-empty-packages.patch
new file mode 100644
index 00000000..63c0b635
--- /dev/null
+++ b/debian/patches/allow-empty-packages.patch
@@ -0,0 +1,111 @@
+From b2440d8b20318ba332250443193f8d46fa6ca523 Mon Sep 17 00:00:00 2001
+From: Erich Schubert <schube@dbs.ifi.lmu.de>
+Date: Fri, 27 Nov 2015 15:10:31 +0100
+Subject: [PATCH] Robustness: allow default package for user extensions.
+
+---
+ .../de/lmu/ifi/dbs/elki/gui/util/ClassTree.java    | 27 +++++++++++-----------
+ 1 file changed, 14 insertions(+), 13 deletions(-)
+
+Index: elki-0.7.0/elki/src/main/java/de/lmu/ifi/dbs/elki/gui/util/ClassTree.java
+===================================================================
+--- elki-0.7.0.orig/elki/src/main/java/de/lmu/ifi/dbs/elki/gui/util/ClassTree.java
++++ elki-0.7.0/elki/src/main/java/de/lmu/ifi/dbs/elki/gui/util/ClassTree.java
+@@ -31,15 +31,15 @@ import javax.swing.tree.TreeNode;
+ 
+ /**
+  * Build a tree of available classes for use in Swing UIs.
+- * 
++ *
+  * @author Erich Schubert
+- * 
++ *
+  * @apiviz.has TreeNode
+  */
+ public class ClassTree {
+   /**
+    * Build the class tree for a given set of choices.
+-   * 
++   *
+    * @param choices Class choices
+    * @param rootpkg Root package name (to strip / hide)
+    * @return Root node.
+@@ -59,7 +59,8 @@ public class ClassTree {
+     for(Class<?> impl : choices) {
+       String name = impl.getName();
+       name = (prefix != null && name.startsWith(prefix)) ? name.substring(prefix.length()) : name;
+-      MutableTreeNode c = new ClassNode(impl.getName().substring(impl.getPackage().getName().length() + 1), name);
++      int plen = (impl.getPackage() != null) ? impl.getPackage().getName().length() + 1 : 0;
++      MutableTreeNode c = new ClassNode(impl.getName().substring(plen), name);
+ 
+       MutableTreeNode p = null;
+       int l = name.lastIndexOf('.');
+@@ -96,7 +97,7 @@ public class ClassTree {
+ 
+   /**
+    * Simplify the tree.
+-   * 
++   *
+    * @param cur Current node
+    * @param prefix Prefix to add
+    * @return Replacement node
+@@ -133,9 +134,9 @@ public class ClassTree {
+ 
+   /**
+    * Tree node representing a single class.
+-   * 
++   *
+    * @author Erich Schubert
+-   * 
++   *
+    * @apiviz.exclude
+    */
+   public static class PackageNode extends DefaultMutableTreeNode {
+@@ -151,7 +152,7 @@ public class ClassTree {
+ 
+     /**
+      * Current class name.
+-     * 
++     *
+      * @param display Displayed name
+      * @param pkgname Actual class name
+      */
+@@ -162,7 +163,7 @@ public class ClassTree {
+ 
+     /**
+      * Return the package name.
+-     * 
++     *
+      * @return Package name
+      */
+     public String getPackageName() {
+@@ -172,9 +173,9 @@ public class ClassTree {
+ 
+   /**
+    * Tree node representing a single class.
+-   * 
++   *
+    * @author Erich Schubert
+-   * 
++   *
+    * @apiviz.exclude
+    */
+   public static class ClassNode extends DefaultMutableTreeNode {
+@@ -190,7 +191,7 @@ public class ClassTree {
+ 
+     /**
+      * Current class name.
+-     * 
++     *
+      * @param display Displayed name
+      * @param clsname Actual class name
+      */
+@@ -201,7 +202,7 @@ public class ClassTree {
+ 
+     /**
+      * Return the class name.
+-     * 
++     *
+      * @return Class name
+      */
+     public String getClassName() {