add setup.py... this builds the library and copies it over to the

build dir so it will get installed...  Also update the library finding
code to look in the modules install directory.

python/edgold/__init__.py

@@ -0,0 +1,7 @@
+#!/usr/bin/env python
+
+'''This is a wrapper around the Goldilocks libdecaf library.
+
+Currently only the ed448 code is wrapped.  It is available in the
+submodule ed448.
+'''

python/ed448.py → python/edgold/ed448.py

@@ -40,17 +40,22 @@ __status__ = 'alpha'
 
 import array
 import os
+import os.path
+import sys
 import unittest
 import warnings
-import sys
 
 from ctypes import *
 
 try:
-	decaf = CDLL('../build/lib/libdecaf.so')
+	_dname = os.path.dirname(__file__)
+	if not _dname:
+		_dname = '.'
+	_path = os.path.join(_dname, 'libdecaf.so')
+	decaf = CDLL(_path)
 except OSError as e: # pragma: no cover
 	import warnings
-	warnings.warn('goldilocks.so not installed.')
+	warnings.warn('libdecaf.so not installed.')
 	raise ImportError(str(e))
 
 DECAF_EDDSA_448_PUBLIC_BYTES = 57
@@ -232,6 +237,8 @@ class TestEd448(unittest.TestCase):
 		key3 = EDDSA448(pub=pubkey)
 		key3.verify(sig, message)
 
+		self.assertRaises(ValueError, key.export_key, 'PEM')
+
 	def test_keyimportexport(self):
 		privkey = b'1' * DECAF_EDDSA_448_PRIVATE_BYTES
 		key = EDDSA448(privkey)

python/setup.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+
+from distutils.command.build import build
+from distutils.core import setup
+
+import os
+
+class my_build(build):
+    def run(self):
+        build.run(self)
+	if not self.dry_run:
+		os.spawnlp(os.P_WAIT, 'sh', 'sh', '-c', 'cd .. && gmake lib')
+		self.copy_file(os.path.join('..', 'build', 'lib', 'libdecaf.so'), os.path.join(self.build_lib, 'edgold'))
+
+cmdclass = {}
+cmdclass['build'] = my_build
+
+setup(name='edgold',
+      version='0.1',
+      description='The Ed ECC Goldilocks Python wrapper',
+      author='John-Mark Gurney',
+      author_email='jmg@funkthat.com',
+      #url='',
+      cmdclass=cmdclass,
+      packages=['edgold', ],
+     )