CI: now try windows

.travis.yml

@@ -23,15 +23,19 @@ if: branch = master
 
 jobs:
     include:
-        - os: osx
-          osx_image: xcode12.2
-          language: shell        # 'language: python' is an error on Travis CI macOS
+    #     - os: osx
+    #       osx_image: xcode12.2
+    #       language: shell        # 'language: python' is not available on Travis CI macOS
+        - os: windows
+          language: shell
+
 
 before_install:
     # Python package manager
     - if [ "$TRAVIS_OS_NAME" = "linux" ]; then travis_retry wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-aarch64.sh -O miniconda.sh; fi
     - if [ "$TRAVIS_OS_NAME" = "osx" ]; then travis_retry wget https://repo.anaconda.com/miniconda/Miniconda3-latest-MacOSX-x86_64.sh -O miniconda.sh; fi
-    - bash miniconda.sh -b -p $HOME/miniconda
+    - if [ "$TRAVIS_OS_NAME" = "windows" ]; then travis_retry wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Windows-x86_64.exe -O miniconda.exe; fi
+    - if [ "$TRAVIS_OS_NAME" = "windows" ]; then miniconda.exe; else bash miniconda.sh -b -p $HOME/miniconda; fi
     - export PATH="$HOME/miniconda/bin:$PATH"; hash -r
     - conda config --set quiet yes --set always_yes yes --set changeps1 no
     - travis_retry conda update -n base -c defaults conda
@@ -47,8 +51,7 @@ install:
     - travis_retry conda create -n test-env
     - eval "$(conda shell.bash hook)"
     - conda activate test-env
-    - if [ "$TRAVIS_OS_NAME" = "linux" ]; then travis_retry conda install -c conda-forge python=${TRAVIS_PYTHON_VERSION%-dev}; fi
-    - if [ "$TRAVIS_OS_NAME" = "osx" ]; then travis_retry conda install -c conda-forge python=3.11; fi
+    - if [ "$TRAVIS_OS_NAME" = "linux" ]; then travis_retry conda install -c conda-forge python=${TRAVIS_PYTHON_VERSION%-dev}; else travis_retry conda install -c conda-forge python=3.11; fi
     - travis_retry conda install -c conda-forge numpy scipy python-igraph h5netcdf tqdm
     - travis_retry conda update  -c conda-forge --all