Removed build on macOS and Windows because tests are/were only perfor…

…med on Linux.

.travis.yml

@@ -4,76 +4,58 @@ python: 3.8
 
 jobs:
   include:
-    # perform a linux build
+    # perform a Linux build
     - services: docker
       env:
+        # perform tests (cover=on)
         - COVER="on"
-        - PYTHON=python3
-        - PIP=pip
-    # and a mac build
-    - os: osx
-      language: shell
-      env:
-        - COVER="off"
-        - PYTHON=python3
-        - PIP=pip
-    # and a windows build
-    - os: windows
-      language: shell
-      env:
-        - COVER="off"
-        - PYTHON=python
-        - PIP=pip
-      before_install:
-        - choco install python --version 3.8.2
-        - export PATH="/c/Python38:/c/Python38/Scripts:$PATH"
 
 env:
   global:
     - TWINE_USERNAME=mcuntz
     # Note: TWINE_PASSWORD is set in Travis settings
 
 install:
-  - $PYTHON -m $PIP install -U pip
-  - $PYTHON -m $PIP install -U setuptools
-  - $PYTHON -m $PIP install -U pytest
-  - $PYTHON -m $PIP install -U pytest-cov
-  - $PYTHON -m $PIP install -U coveralls
-  - $PYTHON -m $PIP install -r tests/requirements_test.txt
-  - $PYTHON -m $PIP install -r docs/requirements.txt
-  - $PYTHON -m $PIP install cibuildwheel
-  - $PYTHON -m $PIP install twine
+  - python3 -m pip install -U pip
+  - python3 -m pip install -U setuptools
+  - python3 -m pip install -U pytest
+  - python3 -m pip install -U pytest-cov
+  - python3 -m pip install -U coveralls
+  - python3 -m pip install -r tests/requirements_test.txt
+  - python3 -m pip install -r docs/requirements.txt
+  - python3 -m pip install cibuildwheel
+  - python3 -m pip install twine
 
 script:
   # create wheels
-  - $PYTHON -m cibuildwheel --output-dir wheelhouse
+  - python3 -m cibuildwheel --output-dir wheelhouse
   # create source dist for pypi and create coverage
   - |
     if [[ $COVER == "on" ]] ; then
-      $PYTHON -m $PIP install -U pytest
-      $PYTHON -m $PIP install -U pytest-cov
-      $PYTHON -m $PIP install -U coveralls
-      $PYTHON -m $PIP install -r tests/requirements_test.txt
+      python3 -m pip install -U pytest
+      python3 -m pip install -U pytest-cov
+      python3 -m pip install -U coveralls
+      python3 -m pip install -r tests/requirements_test.txt
       rm -rf dist
-      $PYTHON setup.py sdist
+      python3 setup.py sdist
       export PYTHONPATH=${PYTHONPATH}:${PWD}
-      $PYTHON -m pytest --cov pyeee --cov-report term-missing -v tests/
-      $PYTHON -m coveralls
+      python3 -m pytest --cov pyeee --cov-report term-missing -v tests/
+      python3 -m coveralls
     fi
 
 after_success:
   # pypi upload (test always, official on TAG)
-  - $PYTHON -m $PIP install -U twine
-  - $PYTHON -m twine upload --verbose --skip-existing --repository-url https://test.pypi.org/legacy/ wheelhouse/*.whl
+  - python3 -m pip install -U twine
+  - python3 -m twine upload --verbose --skip-existing --repository-url https://test.pypi.org/legacy/ wheelhouse/*.whl
   - |
     if [[ $COVER == "on" ]] ; then
-      $PYTHON -m twine upload --verbose --skip-existing --repository-url https://test.pypi.org/legacy/ dist/*.tar.gz
+      python3 -m twine upload --verbose --skip-existing --repository-url https://test.pypi.org/legacy/ dist/*.tar.gz
     fi
   - |
     if [[ $TRAVIS_TAG ]] ; then
-      $PYTHON -m twine upload --skip-existing wheelhouse/*.whl
+      python3 -m twine upload --skip-existing wheelhouse/*.whl
       if [[ $COVER == "on" ]] ; then
-        $PYTHON -m twine upload --skip-existing dist/*.tar.gz
+        python3 -m twine upload --skip-existing dist/*.tar.gz
       fi
     fi