How can I deploy direct from Google Cloud Source Repository to Google App Engine?

Question

Google offers git -> App Engine and git <-> Source Repository, so presumably somewhere it offers Source Repository -> App Engine

Answer 1

Ostensible solution (untested by me) here: https://web.archive.org/web/20161119132814/https://cloudplatform.googleblog.com/2016/10/introducing-Google-Cloud-Shels-new-code-editor.html