Probeer dit eens

Author: Thijs Kramer

setup.py

@@ -47,8 +47,6 @@
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',

tox.ini

@@ -25,7 +25,7 @@ deps =
 whitelist_externals =
     make
 
-install_command = pip install -e ".[test]" --upgrade {opts} {packages}
+install_command = pip install -e '.[test]' --upgrade {opts} {packages}
 
 # include {envsitepackagesdir}/wagtail_textract b/c "import file mismatch":
 # http://tox.readthedocs.io/en/latest/example/pytest.html#known-issues-and-limitations