Reworked setup.py a bit so it does not depend on cython or

numpy. Version bump.

MANIFEST.in

@@ -0,0 +1,9 @@
+include                 *.c
+include                 *.h
+include                 *.pyx
+include                 *.pxd
+recursive-include tests *.py
+recursive-include tests *.pyx
+recursive-include tests *.c
+exclude                 bench_plot.py
+exclude                 benchmark_indexed_gzip.py

setup.py

@@ -1,15 +1,111 @@
 #!/usr/bin/env python
 
-from setuptools    import setup
-from setuptools    import Extension
-from Cython.Build  import cythonize
+import os
+import os.path as op
+import shutil
 
-import numpy as np
+from setuptools import setup
+from setuptools import Extension
+from setuptools import Command
+
+
+# Custom 'clean' command
+class Clean(Command):
+
+    user_options = []
+
+    def initialize_options(self): pass
+    def finalize_options(  self): pass 
+
+    def run(self):
+
+        shutil.rmtree('build',                 ignore_errors=True)
+        shutil.rmtree('dist',                  ignore_errors=True)
+        shutil.rmtree('indexed_gzip.egg-info', ignore_errors=True)
+        shutil.rmtree('.eggs',                 ignore_errors=True)
+
+        files = [
+            'indexed_gzip.c',
+            'setup.pyc',
+            op.join('tests', 'ctest_zran.c'),
+            op.join('tests', 'ctest_indexed_gzip.c'),
+            op.join('tests', '__init__.pyc'),
+            op.join('tests', 'conftest.pyc'),
+            op.join('tests', 'test_zran.pyc'),
+            op.join('tests', 'test_indexed_gzip.pyc')]
+
+        for f in files:
+            try:            os.remove(f)
+            except OSError: pass
+
+
+# If cython is present, we'll compile
+# the pyx files from scratch. Otherwise,
+# we'll compile the pre-generated c
+# files (which are assumed to be present).
+
+# We only need numpy to
+# compile the test modules
+have_cython = True
+have_numpy  = True
+
+
+try:    from Cython.Build import cythonize
+except: have_cython = False
+
+try:    import numpy as np
+except: have_numpy = False
+
+
+# If numpy is present, we need
+# to include the headers
+include_dirs = ['.']
+if have_numpy:
+    include_dirs.append(np.get_include())
+
+
+# Compile from cython files if 
+# possible, or compile from c.
+if have_cython: pyx_extension = 'pyx'
+else:           pyx_extension = 'c'
+
+
+# The indexed_gzip module
+igzip_ext = Extension(
+    'indexed_gzip',
+    ['indexed_gzip.{}'.format(pyx_extension), 'zran.c'],
+    libraries=['z'],
+    extra_compile_args=['-Wno-unused-function'])
+
+# Optional test modules
+test_exts = [
+    Extension(
+        'tests.ctest_zran',
+        ['tests/ctest_zran.{}'.format(pyx_extension), 'zran.c'],
+        libraries=['z'],
+        include_dirs=include_dirs,
+        extra_compile_args=['-Wno-unused-function']),
+    Extension(
+        'tests.ctest_indexed_gzip',
+        ['tests/ctest_indexed_gzip.{}'.format(pyx_extension)],
+        libraries=['z'],
+        include_dirs=include_dirs,
+        extra_compile_args=['-Wno-unused-function'])]
+
+
+# If we have numpy, we can compile the tests
+if have_numpy: extensions = [igzip_ext] + test_exts
+else:          extensions = [igzip_ext]
+
+
+# Cythonize if we can
+if have_cython:
+    extensions = cythonize(extensions)
 
 
 setup(
     name='indexed_gzip',
-    version='0.2',
+    version='0.3',
     author='Paul McCarthy',
     author_email='pauldmccarthy@gmail.com',
     description='Fast random access of gzip files in Python',
@@ -26,25 +122,10 @@
         'Programming Language :: Python :: 3',
         'Topic :: System :: Archiving :: Compression',
     ],
+
+    cmdclass={'clean' : Clean},
 
-    ext_modules=cythonize([
-        Extension('indexed_gzip',
-                  ['indexed_gzip.pyx', 'zran.c'],
-                  libraries=['z'],
-                  extra_compile_args=['-Wno-unused-function']),
-
-        Extension('tests.ctest_zran',
-                  ['tests/ctest_zran.pyx', 'zran.c'],
-                  libraries=['z'],
-                  include_dirs=['.', np.get_include()],
-                  extra_compile_args=['-Wno-unused-function']),
-
-        Extension('tests.ctest_indexed_gzip',
-                  ['tests/ctest_indexed_gzip.pyx'],
-                  libraries=['z'],
-                  include_dirs=['.'],
-                  extra_compile_args=['-Wno-unused-function']) 
-    ]),
+    ext_modules=extensions,
 
     setup_requires=['pytest-runner'],
     tests_require=['pytest', 'numpy'],