use mamba and run notebook online

Author: ocefpaf

.travis.yml

@@ -28,17 +28,17 @@ matrix:
       env: PY=3
 
 before_install:
-  # Install miniconda and create TEST env.
+  # Install micromamba and create TEST env.
   - |
-    wget http://bit.ly/miniconda -O miniconda.sh
-    bash miniconda.sh -b -p $HOME/miniconda
-    export PATH="$HOME/miniconda/bin:$PATH"
-    conda config --set always_yes yes --set changeps1 no --set show_channel_urls true
-    conda update conda --quiet
-    conda config --add channels conda-forge --force
-    conda config --set channel_priority strict
-    conda create --name TEST python=$PY --file requirements.txt --file requirements-dev.txt
-    source activate TEST
+    wget -qO- https://micromamba.snakepit.net/api/micromamba/linux-64/latest | tar -xvj bin/micromamba --strip-components=1
+    ./micromamba shell init -s bash -p ~/micromamba
+    export MAMBA_ROOT_PREFIX=~/micromamba
+    export MAMBA_EXE=$(pwd)/micromamba
+    . ${MAMBA_ROOT_PREFIX}/etc/profile.d/mamba.sh
+
+    echo "micromamba version $(micromamba --version)"
+    micromamba create --yes --name TEST python=$PY pip --file requirements.txt --file requirements-dev.txt --channel conda-forge
+    micromamba activate TEST
 
 install:
   - pip install -e . --no-deps --force-reinstall
@@ -67,7 +67,8 @@ script:
   - |
     if [[ $TRAVIS_JOB_NAME == 'docs' ]]; then
       set -e
-      cp notebooks/quick_intro.ipynb docs/source/
+      travis_wait jupyter nbconvert --to notebook --execute notebooks/quick_intro.ipynb --output=quick_intro-output.ipynb
+      mv notebooks/quick_intro-output.ipynb docs/source/
       pushd docs
       make clean html linkcheck
       popd