I would not count on it, since it's required for proper theme integration. A quick search confirms my suspicion: some font direcories are mapped.
I quite like the idea though, sort of a lite qubes or unmodified VM for all Firefox Flatpak users could be nice.
So I don't want to tell you to panic but I can't find anything about "dslul" or their version of openboard.
It's the app id from F-droid, so I would assume it is legit: https://f-droid.org/packages/org.dslul.openboard.inputmethod.latin/
https://github.com/openboard-team/openboard
Last commit is two years ago. I'd recommend checking what you have installed. A quick search on GPlay finds what appears to be a clone that may or may not leak user data.
OpenBoard is no longer maintained. Heliboard is a good alternative.
I think Google Play on Graphene is a good compromise, since at least it does not have root access. Unfortunately it is very crippling to completely avoid Google on Android.
That being said, I heard others are using work profiles to isolate all apps using Google Play from their more private apps. I'm not doing that, but work profiles are nice for ... well work apps.
You still need to be able to defend against double spends, meaning I digitally copy my wallet and give two people the same 5€.
Not really, if absent means "no change", present means "update" and null means "delete" the three values are perfectly well defined.
For what it's worth, Amazon and Microsoft do it like this in their IoT offerings.
Rust has perfectly fine tools to deal with such issues, namely enums. Of course that cascades through every bit of related code and is a major pain.
A fuel cell does not mean it's an ICE. It will still use an electric motor and probably even a small battery.
Hydrogen ICE exist, but are more complex and less efficient.
You could use Hydrogen to produce so-called e-fuels (we had a huge debate about them in Germany), but those can typically be used in normal ICE vehicels.
In the bottom picture it looks like the top "port" is just an air intake.
I would guess a swappable battery would be separated from the vehicle, similar to a gas bottle for a grill.
The battery would be rented for a small deposit and on swapping you only pay the energy + service fee.
I guess you could also buy one to own, but then could not swap that.
That's how it would make sense, at least.
Back in the day Signal was a Qt app, did that change?
Even central currencies can work if you can make offline and peer to peer payments.
Not easy to pull off cryptographically, though.