python blaze: update inputs and fix tests

pkgs/top-level/python-packages.nix

@@ -1695,19 +1695,28 @@ in modules // {
 
     buildInputs = with self; [ pytest ];
     propagatedBuildInputs = with self; [
-      numpy
-      pandas
-      datashape
-      odo
-      toolz
       cytoolz
-      multipledispatch
-      sqlalchemy9 # sqlalchemy8 should also work
-      psutil
-      numba
+      datashape
+      flask
       h5py
+      multipledispatch
+      numba
+      numpy
+      odo
+      pandas
+      psutil
+      pymongo
+      pyyaml
+      requests2
+      sqlalchemy_1_0
+      tables
+      toolz
     ];
 
+    checkPhase = ''
+      py.test blaze/tests
+    '';
+
     meta = {
       homepage = https://github.com/ContinuumIO/blaze;
       description = "Allows Python users a familiar interface to query data living in other data storage systems";