1 cffi leaves __pycache__ around in the *source* directory, so when we build

     2 64-bit after 32-bit (or vice versa), the modules already exist, but are of the

     3 wrong ELF class.  Ideally, the entire build would happen outside the source

     4 directory, but for the time being, this patch at least makes sure distutils'

     5 build_base directory (plus an extraneous directory structure) is used for the

     6 object files and shared objects.

     7 

     8 There's probably a better way, but it will likely involve deep distutils magic

     9 and maybe some patches to cffi.

    10 

    11 --- xattr-0.7.4/setup.py	Mon Mar  3 10:13:29 2014

    12 +++ xattr-0.7.4/setup.py	Mon Apr 14 14:09:58 2014

    13 @@ -12,6 +12,8 @@

    14      setup_requires hasn't run yet.

    15      """

    16      def finalize_options(self):

    17 +        import cffi.verifier

    18 +        cffi.verifier.set_tmpdir(self.build_base)

    19          from xattr.lib import ffi

    20          self.distribution.ext_modules = [ffi.verifier.get_extension()]

    21          build.finalize_options(self)