This should work on Jolla's Sailfish OS phones as they're running a legit Android in a sandbox. Unfortunately their hardware support is pretty abysmal - and since it's legit Android it's also not free (monetary) and Sailfish OS's UI toolkit is also not free (freedom).

And then there's the installation options that look and behave exactly like a regularly themed Qt application (which it probably is). Wonderful!
Okay, I'm coming from Gentoo and Debian, cut me some slack, I'm easy to please regarding installers :-P

Maybe you should actually have read OP's post.

Unfortunately this is not a time lapse of random developers in pajamas sitting in front of their computers, typing in text, googling stuff on StackOverflow, occasionally scratching their heads and occasionally shouting "fucking Akonadi!!!".
Very disappointed!

/s in case it wasn't obvious

Or issue a DMCA takedown if they violate OP's copyright. Much cheaper, much faster.
But very much illegal if OP's copyrights aren't being violated.

Gentoo.
Everything just works and I can configure everything the way I want.

In the vast overwhelming amount of cases tooltips show additional information that you cannot see from clicking on something or provide an explanation to an option that isn't available without scrounging through a manual. None of those apply here.

In current versions of Firefox you hover your mouse over a non-active tab [...] to see (after a small delay) a tooltip containing the web page title.

Uh... what is the point of that? If I am looking for a specific tab then:

• I probably want to switch to the tab that I am looking for, so staying on the current one is not required
• if there are a few tabs from different pages from the same domain the difference might be hard to see on a thumbnail (similar page headings with logos)
• and most importantly: opening the tab is faster than waiting for the delay anyway

This sounds like a "cool" feature that's looking for an actual problem to solve.

dpkg-reconfigure sysvinit

I don't remember what I was trying to achieve, but it was a bad idea. I also didn't (and still don't) know how to fix the outcome of this, so - since my home was on a separate partition anyway - I just reinstalled Debian since that was much quicker anyway.

Und dann installiert man sich MS-Office und die ersten 600 MB sind schon verbraten...