Related issue with historical context:pallets/werkzeug#2797

Partitioned cookies are now supported in Werkzeug:pallets/werkzeug#2855

It would be nice to have first-class support for the flask session cookie using thePartitioned flag to provide support for Chrome's CHIPS and allow sessions to continue to work within iframes.

Example usage might be:

app.config['SESSION_COOKIE_SAMESITE']="None"app.config['SESSION_COOKIE_SECURE']=Trueapp.config['SESSION_COOKIE_PARTITIONED']=True# add this?