Merge pull request #2947 from serge-sans-paille/fix/pythran-version-checks

Make pythran version checks more resilient

Cython/Build/Dependencies.py

@@ -39,10 +39,8 @@ except ImportError:
 
 try:
     import pythran
-    import pythran.config
-    pythran_version = pythran.__version__
 except:
-    pythran_version = None
+    pythran = None
 
 from .. import Utils
 from ..Utils import (cached_function, cached_method, path_exists,
@@ -131,13 +129,13 @@ def file_hash(filename):
 
 
 def update_pythran_extension(ext):
-    if not pythran_version:
+    if pythran is None:
         raise RuntimeError("You first need to install Pythran to use the np_pythran directive.")
-    pythran_ext = (
-        pythran.config.make_extension(python=True)
-        if pythran_version >= '0.9' or pythran_version >= '0.8.7'
-        else pythran.config.make_extension()
-    )
+    try:
+        pythran_ext = pythran.config.make_extension(python=True)
+    except TypeError:  # older pythran version only
+        pythran_ext = pythran.config.make_extension()
+
     ext.include_dirs.extend(pythran_ext['include_dirs'])
     ext.extra_compile_args.extend(pythran_ext['extra_compile_args'])
     ext.extra_link_args.extend(pythran_ext['extra_link_args'])
@@ -953,8 +951,9 @@ def cythonize(module_list, exclude=None, nthreads=0, aliases=None, quiet=False,
     if 'common_utility_include_dir' in options:
         safe_makedirs(options['common_utility_include_dir'])
 
+    if pythran is None:
         pythran_options = None
-    if pythran_version:
+    else:
         pythran_options = CompilationOptions(**options)
         pythran_options.cplus = True
         pythran_options.np_pythran = True

Cython/Compiler/Pythran.py

@@ -8,11 +8,10 @@ import cython
 
 try:
     import pythran
-    pythran_version = pythran.__version__
-    pythran_is_0_8_7 = pythran_version >= '0.9' or pythran_version >= '0.8.7'
+    pythran_is_pre_0_9 = tuple(map(int, pythran.__version__.split('.')[0:2])) < (0, 9)
 except ImportError:
-    pythran_version = None
-    pythran_is_0_8_7 = False
+    pythran = None
+    pythran_is_pre_0_9 = True
 
 
 # Pythran/Numpy specific operations
@@ -41,10 +40,10 @@ def pythran_type(Ty, ptype="ndarray"):
             ctype = dtype.typedef_cname
         else:
             raise ValueError("unsupported type %s!" % dtype)
-        if pythran_is_0_8_7:
-            return "pythonic::types::%s<%s,pythonic::types::pshape<%s>>" % (ptype,ctype, ",".join(("Py_ssize_t",)*ndim))
-        else:
+        if pythran_is_pre_0_9:
             return "pythonic::types::%s<%s,%d>" % (ptype,ctype, ndim)
+        else:
+            return "pythonic::types::%s<%s,pythonic::types::pshape<%s>>" % (ptype,ctype, ",".join(("Py_ssize_t",)*ndim))
     if Ty.is_pythran_expr:
         return Ty.pythran_type
     #if Ty.is_none:
@@ -129,7 +128,10 @@ def np_func_to_list(func):
         return []
     return np_func_to_list(func.obj) + [func.attribute]
 
-if pythran_version:
+if pythran is None:
+    def pythran_is_numpy_func_supported(name):
+        return False
+else:
     def pythran_is_numpy_func_supported(func):
         CurF = pythran.tables.MODULES['numpy']
         FL = np_func_to_list(func)
@@ -138,9 +140,6 @@ if pythran_version:
             if CurF is None:
                 return False
         return True
-else:
-    def pythran_is_numpy_func_supported(name):
-        return False
 
 def pythran_functor(func):
     func = np_func_to_list(func)

runtests.py

@@ -761,12 +761,10 @@ class TestBuilder(object):
         pythran_dir = self.pythran_dir
         if 'pythran' in tags['tag'] and not pythran_dir and 'cpp' in languages:
             import pythran.config
-            from pythran import __version__ as pythran_version
-            pythran_ext = (
-                pythran.config.make_extension(python=True)
-                if pythran_version >= '0.9' or pythran_version >= '0.8.7'
-                else pythran.config.make_extension()
-            )
+            try:
+                pythran_ext = pythran.config.make_extension(python=True)
+            except TypeError:  # old pythran version syntax
+                pythran_ext = pythran.config.make_extension()
             pythran_dir = pythran_ext['include_dirs'][0]
 
         preparse_list = tags.get('preparse', ['id'])