Documentation. Install scikit-learn after OpenML to make sure installation from clean works too.

Author: PGijsbers

ci_scripts/install.sh

@@ -26,7 +26,6 @@ popd
 # provided versions
 conda create -n testenv --yes python=$PYTHON_VERSION pip
 source activate testenv
-pip install scikit-learn==$SKLEARN_VERSION
 
 python --version
 pip install -e '.[test]'
@@ -45,3 +44,7 @@ fi
 if [[ "$RUN_FLAKE8" == "true" ]]; then
     pip install flake8 mypy
 fi
+
+# Install scikit-learn last to make sure the openml package installation works
+# from a clean environment without scikit-learn.
+pip install scikit-learn==$SKLEARN_VERSION

setup.py

@@ -6,6 +6,8 @@
 with open("openml/__version__.py") as fh:
     version = fh.readlines()[-1].split()[-1].strip("\"'")
 
+# Using Python setup.py install will try to build numpy which prone to failure and
+# very time consuming anyway.
 if len(sys.argv) > 1 and sys.argv[1] == 'install':
     print('Please install this package with pip: `pip install -e .` '
           'Installation requires pip>=10.0.')