Change the PART to have only one that need SciPy and install it only for this PART.

.travis.yml

@@ -14,16 +14,20 @@ install:
 # If we don't install numpy before SciPy 0.10.1, the SciPy installations fails.
   - "pip install -q numpy==1.5 --use-mirrors"
 # We support scipy 0.7.2, but it is not available on pypi anymore.
-# So we test with 0.8. Our internal buildbot have 0.7.2
-  - "pip install -q scipy==0.8 --use-mirrors"
+# So we test with 0.8. Our internal buildbot have 0.7.2.
+# We install it later only for the PART that need it.
+#  - "pip install -q scipy==0.8 --use-mirrors"
   - "pip install . --no-deps --use-mirrors"
 # command to run tests
 env:
-  - PART="theano/tensor/nnet/ theano/tensor/signal/ theano/compile/ theano/gof/ theano/misc/ theano/scalar/ theano/tests/"
-  - PART="theano/scan_module/ theano/sandbox theano/sparse"
+  - PART="theano/tensor/nnet/ theano/tensor/signal/ theano/compile/ theano/gof/ theano/misc/ theano/tests/ theano/compat"
+# This part is select such that all scipy code is there.
+# We install scipy only for this part to make the test time faster.
+  - PART="theano/scan_module/ theano/sandbox theano/sparse theano/scalar/"
   - PART="theano/tensor/tests/test_basic.py"
   - PART="-e test_basic.py theano/tensor/tests"
 script:
+  - if [ `expr "$PART" : '.*sparse'` -gt "0" ]; then pip install scipy==0.8 --use-mirrors; fi
   - export THEANO_FLAGS=warn.ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise
   - python --version
   - uname -a