Some notes:
The correct link is https://mirror.linux.pizza/pureos/
I dont mirror images (yet).
The .onion address:
lxpizzamm6twgep2.onion/pureos/

I filed https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=946476

that wold be so super cool since it would prevent dragging around deboostrap scripts by hand.

Fixed this way;

It seems it was disabled by default in my session.

Provided to show the issue. The lock button is not showed as in other users newly created.

This issue is maintained after some upgrades in the default user.

Removing libmutter may not be an option;

Actually, I managed to upgrade the OS by upgrading the packages one by one. None of them triggered that error.

I do not have a solution to installing libmutter, but I was able to upgrade everything else after removing mutter as a package.

Thank you for the explanation. Anyways, I recognize again I confused the default behavior of suggested packages with recommended packages.

There are many, many, MANY ways you can break your system, by changing how its configuration to behave differently from what it did when initially installed.

It started of whatever I thought it was an issue and finished as a question or request about the possibility to let people choose if "install recommends" should be enabled or disabled by default.

Thanks Wayne. Closing this one.

This looks like a duplicate of tracker item. You might wish to check there, but there has been no resolution that I have seen. I too uninstalled it.

This may not be your issue, but there are problems with add-ons for Thunderbird 68. (I am not sure from which version your are updating for example.) From the release notes, one unresolved issue is:

Yes, unrar-free recommends unar.

I am using the following script to report battery level to a log:

I am running without gnome (dwm/x11) and have UPower.conf as attached. I have had my librem 15v3 simply poweroff many times between 25-50% batter as reported by /sys/class/power_supply/BAT/capacity.