Add stricter ranges to requirements.txt.

requirements-sphinx.txt

@@ -1,14 +1,15 @@
-chardet>=2.0.1
-dnspython3>=1.12
-html5lib>=0.999
-# lxml>=3.1.0
-namedlist>=1.3
-psutil>=2.0
-sqlalchemy>=0.9
+# Should be the same for requirements.txt:
+chardet>=2.0.1,<=2.3
+dnspython3==1.12
+html5lib>=0.999,<1.0
+# lxml>=3.1.0,<=3.5 # except for this because it requires building C libs
+namedlist>=1.3,<=1.7
+psutil>=2.0,<=4.2
+sqlalchemy>=0.9,<=1.0.13
 tornado>=3.2.2,<5.0
-typing>=3.5
-yapsy>=1.11.223
+typing>=3.5,<=3.5.1
+yapsy==1.11.223
 
-# for sphinx doc
-sphinx-argparse
-sphinxcontrib-napoleon>=0.2.6
+# for sphinx doc only:
+sphinx-argparse<=0.1.15
+sphinxcontrib-napoleon>=0.2.6,<=0.5.0

requirements.txt

@@ -1,10 +1,14 @@
-chardet>=2.0.1
-dnspython3>=1.12
-html5lib>=0.999
-lxml>=3.1.0
-namedlist>=1.3
-psutil>=2.0
-sqlalchemy>=0.9
+# Absolutely known to work versions only:
+chardet>=2.0.1,<=2.3
+dnspython3==1.12
+html5lib>=0.999,<1.0
+lxml>=3.1.0,<=3.5
+namedlist>=1.3,<=1.7
+psutil>=2.0,<=4.2
+sqlalchemy>=0.9,<=1.0.13
 tornado>=3.2.2,<5.0
-typing>=3.5
-yapsy>=1.11.223
+typing>=3.5,<=3.5.1
+yapsy==1.11.223
+
+# Keep me sorted and update the other files :)
+

setup.py

@@ -92,6 +92,9 @@ def get_version():
     package_dir=PROJECT_PACKAGE_DIR,
 )
 
+
+# Do not add version ranges unless absolutely required!
+# See also requirements.txt
 setup_kwargs['install_requires'] = [
     'chardet',
     'dnspython3',