getting xtensor from QuantStack channel

Author: JohanMabille

.appveyor.yml

@@ -23,7 +23,8 @@ install:
   - conda update -q conda
   - conda info -a
   - conda install gtest cmake -c conda-forge
-  - conda install xtensor==0.15.0 pytest numpy pybind11==2.2.1 -c conda-forge
+  - conda install pytest numpy pybind11==2.2.1 -c conda-forge
+  - conda install xtensor==0.15.1 -c QuantStack
   - "set PYTHONHOME=%MINICONDA%"
   - cmake -G "NMake Makefiles" -D CMAKE_INSTALL_PREFIX=%MINICONDA%\\Library -D BUILD_TESTS=ON -D PYTHON_EXECUTABLE=%MINICONDA%\\python.exe .
   - nmake test_xtensor_python

.travis.yml

@@ -95,8 +95,9 @@ install:
     - conda update -q conda
     # Useful for debugging any issues with conda
     - conda info -a
-    - conda install xtensor==0.15.0 pytest numpy pybind11==2.2.1 -c conda-forge
+    - conda install pytest numpy pybind11==2.2.1 -c conda-forge
     - conda install cmake gtest -c conda-forge
+    - conda install xtensor==0.15.1 -c QuantStack
     - cmake -D BUILD_TESTS=ON -D CMAKE_INSTALL_PREFIX=$HOME/miniconda .
     - make -j2 test_xtensor_python
     - make install