Hi,
I receive an error gbp:error: Overlay must be used with --git-export-dir.

I have a repository with debian/gbp.conf as follows:

[DEFAULT]
upstream-tag = v%(version)s

[buildpackage]
overlay = True
export-dir = ../build-area

In the generate-git-snapshot script, --git-export-dir is unset. I was able to continue successfully with the build by overriding GBP_OPTS and explicitly setting --git-export-dir=../. I'm concerned however that this might break something else?

For an example of this behaviour, try to build the https://packages.debian.org/source/buster/skalibs package.

Thanks,