And hopefully I can save a few devices from getting trashed. :)

Made huge amounts of progress since I posted this! Should really post a follow-up at some point. :D

Do you get fined if you are unlucky to have no harvest and cannot bring anything back?

Only if you have a different use-case or if you are a fundamentalist. Most software is not inherently bad, it just might not be what you want.

Not having systemd was always the only reason I did not seriously consider using it, now I will have to re-consider.

Now... I'd love to read a How To.

Depaving the way to a bright future, love it.

Phosh, Gnome Shell for Mobile is still in develoment and not packaged for Debian yet. As far as I know, it is only packaged in postmarketOS.

You could join the Mobian Matrix room or the PostmarketOS room I have mentioned in another post on this thread (or whatever the right term is... Comment on a post? Sub-post?). I did not know anything about porting two weeks ago, but asking dumb questions helps learning.

Those are impossible to hard brick in my experience, you would need to break both bootloaders and recoveries. See if this helps:

https://flash.android.com/welcome

Also, Pixel 3 has different hardware, but is supported by pmOS and I've spotted some commits in Mobian, so there might be people working on it there.

Same, my Pinephone does that within an hour maybe xD

Nope. They look differently and have different functions. PostmarketOS wiki has screenshots: https://wiki.postmarketos.org/wiki/Category:Interface

Oh, I don't mind questions. :)

Help: A lot via the Mobian Ports ( #mobian-ports:matrix.org ) Matrix room and the postmarketOS offtopic ( #offtopic:postmarketos.org ) Matrix room.

Sources: Not much there yet. As soon as there are official builds for the Pixel 3a, I will start writing docs. I already have a lot of notes on what I had to do. But first I need to have someone merge the Kernel patches, as I don't know C, which makes resolving merge conflicts really hard, it turns out. Once that is done, there are just a few smaller merge requests left and builds will appear magically.

The whole process is not that difficult if there are already Kernel patches available. In the case of the Pixel 3a, I only had to clone the sdm670-mainline repo ( https://gitlab.com/sdm670-mainline/linux-patches ) , compile the kernel (two commands) and get a .deb, which I used with mobian-recipes ( https://salsa.debian.org/Mobian-team/mobian-recipes/ ) to build an image. I then wrote a config file for droid-juicer ( https://gitlab.com/mobian1/droid-juicer/-/merge_requests/4 ) which tells it what files on the vendor and modem partitions it should get, then those are copied to /usr/lib/firmware/updates/.

That was easy as dmesg will just tell you what files it cannot load because they are missing. Just find those, write the config, run droid-juicer, reboot... boom. Display, Wifi, LTE and so on working.

Then smaller stuff like udev rules for vibration and an initramfs hook ( https://salsa.debian.org/DebianOnMobile-team/qcom-phone-utils/-/blob/debian/latest/initramfs-tools/hooks/qcom-firmware?ref_type=heads ) so that firmware files get integrated into initramfs and components start to work early during boot.

The most difficult part would be merging the Kernel patches with other patches and resoving the merge conflicts... At least to me, as I don't know C.

If there are no mainlining efforts for a phone yet, then I don't know what to do, as that requires a Kernel dev.

For the Pixel 4a you mentioned, there is a postmarketOS port. So this should be doable. ( https://wiki.postmarketos.org/wiki/Google_Pixel_4a_(google-sunfish) )

That's all not that hard, my main difficulty was finding out what to do. Everything I did so far would be an afternoon of work, if I had just found the necessary information much quicker. Instead I spent two weeks, of which 95 % was finding info, lol.

Just join the Mobian Matrix room, we should be able to help you, even though I know far less than the others there...so far. :p

I do hope that's helpful and I'll happily try to answer more questions. :)

Kernel mainlining effort for the SoC in thr Pixel 4a: https://github.com/sm7150-mainline/linux