AZURE: Environment reset at each step

Author: effigies

.azure-pipelines/windows.yml

@@ -28,23 +28,25 @@ jobs:
         python -m pip install --upgrade pip setuptools>=30.3.0 wheel
       displayName: 'Install virtualenv'
     - script: |
-        # Optional dependencies
+        venv\\scripts\\activate
         python -m pip install numpy scipy matplotlib h5py pydicom
-        # Test dependencies
         python -m pip install nose mock coverage codecov
       displayName: 'Install dependencies'
     - script: |
+        venv\\scripts\\activate
         python -m pip install .
         SET NIBABEL_DATA_DIR=%CD%\\nibabel-data
       displayName: 'Install nibabel'
     - script: |
-        # Change into an innocuous directory and find tests from installation
+        venv\\scripts\\activate
         mkdir for_testing
         cd for_testing
         cp ../.coveragerc .
         nosetests --with-doctest --with-coverage --cover-package nibabel nibabel
       displayName: 'Install nibabel'
     - script: |
+        venv\\scripts\\activate
+        cd for_testing
         codecov
       displayName: 'Upload To Codecov'
       env: