move solvers module from cython to python

setup.py

@@ -43,11 +43,6 @@ CYTHON_TRACE_OPTION = '--cython-trace'
 MANIFEST_IN_FILE = 'MANIFEST.in'
 SPARSELIB = None
 distr_root = os.path.dirname(os.path.abspath(__file__))
-SCIPY_SOLVER_DIR, SCIPY_SOLVER_LIB = os.path.split(
-                                        scipy.integrate._dop.__file__)
-# Leading colon specifies that the name is the actual filename, otherwise the
-# linker looks for 'lib<name>.so'; SCIPY_SOLVER_LIB is not of this form.
-SCIPY_SOLVER_LIB = ':' + SCIPY_SOLVER_LIB
 
 # Let tkwant itself determine its own version.
 # We cannot simply import tkwant, as it is not built yet.
@@ -212,17 +207,6 @@ def extensions():
                                        'tkwant/linalg/blas_sparse.pxd']}))
         )
 
-    # solvers
-    result.append((['tkwant.onebody.solvers',
-      ['tkwant/onebody/solvers.pyx']],
-     {'libraries': [SCIPY_SOLVER_LIB],
-      'extra_link_args': ['-Wl,-rpath={}'.format(SCIPY_SOLVER_DIR)],
-      'library_dirs': [SCIPY_SOLVER_DIR],
-      'include_dirs': ['tkwant/onebody'],
-      'depends': ['tkwant/onebody/kernels.pxd'],
-     }
-    ))
-
     #### Add cython tracing macro
     if trace_cython:
         for args, kwargs in result:

tkwant/onebody/solvers.pyx → tkwant/onebody/solvers.py

 # -*- coding: utf-8 -*-
 #
-# Copyright 2016-2018 tkwant authors.
+# Copyright 2016 tkwant authors.
 #
 # This file is part of tkwant.  It is subject to the license terms in the file
 # LICENSE.rst found in the top-level directory of this distribution and at
@@ -12,9 +12,6 @@
 import numpy as np
 import scipy.integrate
 
-from . cimport kernels
-from . import kernels
-
 __all__ = ['Scipy']