[hughsie@hughsie-laptop PackageKit]$ ./waf
Traceback (most recent call last):
  File "/home/hughsie/Code/PackageKit/waf", line 6, in <module>
    imp.load_source("waf","waf-light")
  File "/home/hughsie/Code/PackageKit/waf-light", line 160, in <module>
    Scripting.prepare()
  File "/home/hughsie/Code/PackageKit/wafadmin/Scripting.py", line 282, in prepare
    try: main()
  File "/home/hughsie/Code/PackageKit/wafadmin/Scripting.py", line 363, in main
    ret = bld.compile()
  File "/home/hughsie/Code/PackageKit/wafadmin/Build.py", line 162, in compile
    Object.flush()
  File "/home/hughsie/Code/PackageKit/wafadmin/Object.py", line 76, in flush
    obj.post()
  File "/home/hughsie/Code/PackageKit/wafadmin/Object.py", line 134, in post
    self.apply()
  File "/home/hughsie/Code/PackageKit/wafadmin/Tools/ccroot.py", line 170, in apply
    if not self.source and not getattr(self, 'nochecks'):
AttributeError: 'gnomeobj' object has no attribute 'nochecks'