将go delve与Google App Engine Standard和dev_appserver.py一起使用

Question

In the google release notes it says:

November 15, 2017
Go runtime notes

Updated Go SDK to 1.9.61
Add --go_debugging flag to dev_appserver.py to enable Delve debugging.

I'm using dev_appserver.py to fire up several services simultaneously, so that they all share the same datastore emulator, and it works great.

However, when I add that --go_debugging flag, I get lots of errors which I don't understand. If anyone has insight, I'd be grateful.

I get these kinds of errors for each service it tries to build:

can't load package: package -N: unknown import path "-N": cannot find module providing package -N
can't load package: package -l: unknown import path "-l": cannot find module providing package -l

Is there maybe a problem with launching several services at once?

Thanks!