Bug#994982: live-build: Error using packages.chroot and disabling --apt-indices

Package: live-build

Version: 1:20210407
Severity: important

Combining package customisation in packages.chroot and the '--apt-indices false' option result in no image being generated, (though a successful exit status). Using either on it's own works just fine.

Steps to reproduce (assuming some local packages in ~/ to use):

cd live-build/examples/
mkdir -p config/packages.chroot/ && cp ~/*.deb config/packages.chroot/
sudo bash -c "auto/config --apt-indices false"
sudo bash -c "auto/build --verbose --debug"

The problem appears to be:

[2021-09-24 11:11:26] lb chroot_apt install
P: Configuring file /etc/apt/apt.conf
[2021-09-24 11:11:26] lb chroot_archives binary install
P: Configuring file /etc/apt/sources.list
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package squashfs-tools
E: An unexpected failure occurred, exiting...
P: Begin unmounting filesystems...
P: Saving caches...

which appears to in chroot_archives here: https://salsa.debian.org/live-team/live-build/-/blob/master/scripts/build/chroot_archives#L190

Refs:

https://live-team.pages.debian.net/live-manual/html/live-manual/customizing-package-installation.en.html#438

https://live-team.pages.debian.net/live-manual/html/live-manual/customizing-package-installation.en.html#467