we support scipy 0.7.2 as the main buildbot use it event if for python 2.4 we use scipy 0.8.

NEWS.txt

@@ -72,7 +72,7 @@ Deprecation:
    This was a predecessor of SharedVariable with a less pythonic philosophy.
 
 Interface changes:
- * Now the base version requirements are numpy >= 1.5.0 and the optional scipy >= 0.8.
+ * Now the base version requirements are numpy >= 1.5.0 and the optional scipy >= 0.7.2.
  * In Theano 0.5, we removed the deprecated sharedvar.value property.
    Now we raise an error if you access it. (Frederic B.)
  * theano.function does not accept duplicate inputs, so function([x, x], ...)

doc/sandbox/sparse.txt

@@ -7,7 +7,7 @@ Sparse matrices
 scipy.sparse
 ------------
 
-Note that you want SciPy >= 0.8.0.
+Note that you want SciPy >= 0.7.2
 
 .. warning::
 
@@ -15,7 +15,7 @@ Note that you want SciPy >= 0.8.0.
     dimensions. There may be more bugs. It also has inconsistent
     implementation of sparse matrices.
 
-    We do not test against SciPy 0.7.*.
+    We do not test against version bellow SciPy 0.7.2.
 
 We describe the details of the compressed sparse matrix types.
     ``scipy.sparse.csc_matrix``

setup.py

@@ -177,7 +177,7 @@ def do_setup():
           license=LICENSE,
           platforms=PLATFORMS,
           packages=find_packages(),
-          install_requires=['numpy>=1.5.0', 'scipy>=0.8.0'],
+          install_requires=['numpy>=1.5.0', 'scipy>=0.7.2'],
           package_data={
               '': ['*.txt', '*.rst', '*.cu', '*.cuh', '*.c', '*.sh',
                    'ChangeLog'],