downloadunpacked: fix an issue in extracting hard links.

slapos/recipe/downloadunpacked.py

@@ -174,6 +174,9 @@ def unpack_tarfile_patched(filename, extract_dir, progress_filter=setuptools.arc
                 prelim_dst = os.path.join(extract_dir, *name.split('/'))
 
                 if member is not None and (member.isfile() or member.isdir() or member.islnk() or member.issym()):
+                    # Prepare the link target for makelink().
+                    if member.islnk():
+                        member._link_target = os.path.join(extract_dir, member.linkname)
                     final_dst = progress_filter(name, prelim_dst)
                     if final_dst:
                         if final_dst.endswith(os.sep):