seen on the mipsel buildbot

running build
running build_ext
INFO: Can't locate Tcl/Tk libs and/or headers
Traceback (most recent call last):
  File "./setup.py", line 1880, in <module>
    main()
  File "./setup.py", line 1875, in main
    'Lib/smtpd.py']
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/core.py",
line 152, in setup
    dist.run_commands()
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/dist.py",
line 975, in run_commands
    self.run_command(cmd)
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/dist.py",
line 995, in run_command
    cmd_obj.run()
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/command/build.py",
line 134, in run
    self.run_command(cmd_name)
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/cmd.py",
line 333, in run_command
    self.distribution.run_command(command)
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/dist.py",
line 995, in run_command
    cmd_obj.run()
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/command/build_ext.py",
line 343, in run
    self.build_extensions()
  File "./setup.py", line 201, in build_extensions
    build_ext.build_extensions(self)
  File
"/home/doko/buildarea/trunk.klose-debian-mipsel/build/Lib/distutils/command/build_ext.py",
line 469, in build_extensions
    self.build_extension(ext)
  File "./setup.py", line 234, in build_extension
    if not self.configure_ctypes(ext):
  File "./setup.py", line 1684, in configure_ctypes
    execfile(ffi_configfile, globals(), fficonfig)
  File "build/temp.linux-mips-2.7-pydebug/libffi/fficonfig.py", line 32,
in <module>
    ffi_sources += ffi_platforms['MIPS']
KeyError: 'MIPS'
[47349 refs]
make: *** [sharedmods] Error 1