Thanks @deathtenk this looks plausible but seems awfully manual, I'm wondering if there is a library function to do this for us?

@juzna please could you comment on this?

yea I only did it this way because it doesn't add a dependency and as a clojure developer I try to make it a habit of trying not to muck up dependency trees. My research on pythons core time and datetime stuff revealed its fairly limited in terms of what it can do at a high level. However I'm sure someone's written a library that would account for more edge cases (perhaps pytz?).

Yes it looks like pytz does this kind of thing but as you say it feels odd to bring in another dependency for such a small thing.

I also find it strange that InstalledAppFlow is essentially giving us a UTC when the token requires local. It seems like the auth library is setting us up to fail. Or I still have not fully understood what is happening here.

@juzna you say that the auth library is doing the right thing here so do you think that @deathtenk 's fix is the way to go?

@deathtenk I'm going to run some tests with your changes. As I'm in British Summer Time right now your fix is relevant to me (in the winter GMT=UTC so the bug would not show up for me).

Hi, if you look at python documentation of the datetime.timestamp function used, it says exactly what to do:

There is no method to obtain the POSIX timestamp directly from a naive datetime instance representing UTC time. If your application uses this convention and your system timezone is not set to UTC, you can obtain the POSIX timestamp by supplying tzinfo=timezone.utc:
timestamp = dt.replace(tzinfo=timezone.utc).timestamp()

I didn't try to validate it with this library, but I think it should work.

@gilesknap tested locally and this works. It's a more managed solution then the manual offset I was doing before, go ahead and test it on your end.

Thanks both will run some tests here in BST.

The test failures are due to httpbin.org being down. Not related to the code changes.

Testing looks good. merging...

Thanks @deathtenk and @juzna