version lock on Python 3.4

.travis.yml

@@ -100,8 +100,6 @@ script:
 # pyembree, scikit-image, python-fcl not available everywhere
 - if [[ "$PYTHON_VERSION" == "3.6" ]]; then conda install pyembree scikit-image; fi;
 - if [[ "$PYTHON_VERSION" == "3.6" ]]; then pip install python-fcl; fi;
-# lxml stopped supporting EOL Python
-- if [[ "$PYTHON_VERSION" == "3.4" ]]; then pip install lxml==4.3.5 shapely==1.6.4; fi;
 
 # install most deps here
 - pip install -q .[easy]

setup.py

@@ -62,6 +62,17 @@
                          'pyinstrument',  # profile code
                          'coveralls'])   # report coverage stats
 
+
+# python 3.4 support has been dropped from upstream packages
+# version lock those packages here so install succeeds
+if (sys.version_info.major, sys.version_info.minor) == (3, 4):
+    # remove version-free requirements
+    requirements_easy.remove('lxml')
+    requirements_easy.remove('shapely')
+    # add working version locked requirements
+    requirements_easy.add('lxml==4.3.5')
+    requirements_easy.add('shapely==1.6.4')
+
 # if someone wants to output a requirements file
 # `python setup.py --list-all > requirements.txt`
 if '--list-all' in sys.argv:
@@ -115,4 +126,4 @@
       extras_require={'test': list(requirements_test),
                       'easy': list(requirements_easy),
                       'all': list(requirements_all)}
-)
+      )