--- apache-ivy-2.5.2/build.xml	2023-10-30 16:09:23.892302634 +0100
+++ apache-ivy-2.5.2/build.xml	2023-10-30 16:12:01.143389848 +0100
@@ -185,6 +185,7 @@
         <javac srcdir="${src.dir}"
                destdir="${core.classes.build.dir}"
                sourcepath=""
+               classpathref="lib.classpath"
                source="${ivy.minimum.javaversion}"
                target="${ivy.minimum.javaversion}"
                debug="${debug.mode}"
--- apache-ivy-2.5.2/src/java/org/apache/ivy/util/FileUtil.java	2023-10-30 16:09:23.928969555 +0100
+++ apache-ivy-2.5.2/src/java/org/apache/ivy/util/FileUtil.java	2023-10-30 16:13:35.547375897 +0100
@@ -46,7 +46,7 @@
 import java.util.zip.GZIPInputStream;
 import java.util.zip.ZipInputStream;
 
-import static java.util.jar.Pack200.newUnpacker;
+import static io.pack200.Pack200.newUnpacker;
 
 /**
  * Utility class used to deal with file related operations, like copy, full reading, symlink, ...