pip intall --upgrade cloudstorage

[...]
    creating buildtemp.win-amd64-2.7Releasebuildtemp.win-amd64-2.7Release
    C:Usersuser_nameAppDataLocalProgramsCommonMicrosoftVisual C++ for Python9.0VCBinamd64cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -Ic:python27include -Ic:python27PC /Tcbuildtemp.win-amd64-2.7Release_lib.c /Fobuildtemp.win-amd64-2.7Releasebuildtemp.win-amd64-2.7Release_lib.obj
    _lib.c
    buildtemp.win-amd64-2.7Release_lib.c(504) : fatal error C1083: Cannot open include file: 'sys/xattr.h': No such file or directory
    error: command 'C:\Users\user_name\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0\VC\Bin\amd64\cl.exe' failed with exit status 2

    ----------------------------------------
Command "c:python27python.exe -u -c "import setuptools, tokenize;__file__='c:\users\charlie.g\appdata\local\temp\pip-install-ekfv8g\xattr\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('rn', 'n');f.close();exec(compile(code, __file__, 'exec'))" install --record c:usersuser_nameappdatalocaltemppip-record-_ejcquinstall-record.txt --single-version-externally-managed --compile --home=c:usersuser_nameappdatalocaltemppip-target-ndt9sh" failed with error code 1 in c:usersuser_nameappdatalocaltemppip-install-ekfv8gxattr