Travis build fix for python 2

Author: Sylvain MARIE

.travis.yml

@@ -19,12 +19,14 @@ env:
 before_install:
   # (a) linux dependencies
   - sudo apt-get install ant
-  - sudo apt-get install ant-optional
+  - sudo apt-get install ant-optional  # for junitreports
 
 install:
   - pip list
   - pip install six setuptools_scm  # apparently python 2 requires this
   - python ci_tools/py_install.py pip ci_tools/requirements-pip.txt
+  # this does not work anymore on python 2 so lets only do it when needed
+  - if [ "${TRAVIS_PYTHON_VERSION}" = "3.5" ]; then pip install mkdocs-material mkdocs; fi;
   # travis-specific installs
   - pip install PyGithub  # for ci_tools/github_release.py
   - pip install codecov  # See https://github.com/codecov/example-python.
@@ -66,6 +68,7 @@ after_success:
       git remote add gh-remote "${GH_REF}";
       git fetch gh-remote && git fetch gh-remote gh-pages:gh-pages;  # make sure we have the latest gh-remote
       # push but only if this is not a build triggered by a pull request
+      # note: do not use the --dirty flag as it breaks client-side search
       if [ "${TRAVIS_PULL_REQUEST}" = "false" ] && [ "${TRAVIS_PYTHON_VERSION}" = "3.5" ]; then echo "Pushing to github"; PYTHONPATH=mini_lambda/ mkdocs gh-deploy -v -f docs/mkdocs.yml --remote-name gh-remote; git push gh-remote gh-pages; fi;
     else
       echo "File 'ci_tools/github_travis_rsa' has not been created, please check your encrypted repo token in .travis.yml, on the line starting with 'openssl aes-256-cbc...'"

ci_tools/requirements-pip.txt

@@ -21,5 +21,6 @@ pytest-html==1.9.0  # otherwise requires pytest 5
 xunitparser
 
 # --- to generate the doc (see .travis)
-mkdocs-material  #==3.3.0
-mkdocs  # ==1.0.4  # this is to prevent a version non-compliant with mkdocs-material to be installed.
+# not supported in python 2 anymore, so now installed directly in travis.yml
+# mkdocs-material  #==3.3.0
+# mkdocs  # ==1.0.4  # this is to prevent a version non-compliant with mkdocs-material to be installed.