build own docs in travis

Author: akhmerov

.travis.yml

@@ -10,6 +10,24 @@ matrix:
     - name: "Python 3.7"
       dist: cosmic
       python: 3.7
+    - name: "Docs"
+      dist: cosmic
+      python: 3.7
+      # Because we are using multiple extra packages, installation is much more
+      # involved and we use conda.
+      install:
+        - wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh
+        - bash miniconda.sh -b -p $HOME/miniconda
+        - export PATH="$HOME/miniconda/bin:$PATH"
+        - source "$HOME"/miniconda/etc/profile.d/conda.sh
+        - conda config --set always_yes yes --set changeps1 no
+        - conda env create -f environment.yml
+        - conda activate jupyter-sphinx
+        - python -m ipykernel install --user --name python3 --display-name "Python3"
+        - pip install .
+      script:
+        - make -C doc html
+        - make -C doc latex
 install:
   - pip install .
 script: