On GitHub is a wonderful installation instructions, but most users GitHub, use Linux, it's not worked on Windows.... https://github.com/openlayers/ol3/wiki/Developer-Guide
How can I build OpenLayers 3 on Windows?
Can't install Pystache
Traceback (most recent call last):
File "C:\Openlayers\pystache-0.5.3\setup.py", line 111, in <module>
import setuptools as dist
ImportError: No module named setuptools
And Closure Linter
Warning (from warnings module):
File "C:\Openlayers\lib\distutils\dist.py", line 267
warnings.warn(msg)
UserWarning: Unknown distribution option: 'install_requires'