It seems sphinx.ext.refcounting is no longer available from Sphinx ver 1.2 but Shiboken tried to import it and fail the instll steps if the new version of Sphinx is installed.
I don't have trouble with this since I decied to install old version (Sphinx 1.1.3) but in case someone could not figure out why PySide couldn't be installed via pip.
It seems
sphinx.ext.refcounting
is no longer available from Sphinx ver 1.2 but Shiboken tried to import it and fail the instll steps if the new version of Sphinx is installed.I don't have trouble with this since I decied to install old version (Sphinx 1.1.3) but in case someone could not figure out why PySide couldn't be installed via pip.
How to downgrade sphinx and install PySide
Best :-)