Bug#918090: theano: C-optimized ops fail with "module 'numpy.core.multiarray' has no attribute '_get_ndarray_c_version'"

[Rebecca N. Palmer]

Source: theano
Version: 1.0.2+dfsg-1
Severity: serious
Control: tags -1 patch

Many Theano operations include C code for speed; the compilation process 
uses an undocumented Numpy function to check ABI compatibility.

In Numpy 1.16 (recently added to sid), this function is moved, causing 
all compiles to fail: 
https://ci.debian.net/data/packages/unstable/amd64/t/theano/latest-autopkgtest/log.gz

Fix:

--- a/theano/theano/gof/cc.py
+++ b/theano/theano/gof/cc.py
@@ -1375,12 +1375,8 @@

          # We must always add the numpy ABI version here as
          # DynamicModule always add the include <numpy/arrayobject.h>
-        if np.lib.NumpyVersion(np.__version__)<'1.16.0a':
-            ndarray_c_version = np.core.multiarray._get_ndarray_c_version()
-        else:
-            ndarray_c_version = 
np.core._multiarray_umath._get_ndarray_c_version()
          sig.append('NPY_ABI_VERSION=0x%X' %
-                   ndarray_c_version)
+                   np.core.multiarray._get_ndarray_c_version())
          if c_compiler:
              sig.append('c_compiler_str=' + c_compiler.version_str())