Earlier quoted context omitted.
The MNT Reform [1] is an attempt at this. All parts replaceable and upgradable, with full schematics and design docs available when possible. I can’t find the exact quote, but the SoC and batteries were chosen because they are expected to still be manufactured 30 years out. Obvious drawbacks are compared to other laptops it’s under powered, bulky, and expensive, but as one review pointed out, “This is the laptop you'…
NXP claims 15 years of longevity for their i.MX8 family. That's not bad, although I don't know what it means in practice (there are many chips that are effectively obsolete but you could still buy them as long as your order quantity is in the tens of thousands at least). I would not expect the SoC to be available in 30 years, but it's impossible to say for sure. Of course, for the SoM you need other parts as well (LP…
> The SoM plugs into the Reform motherboard’s central 200-pin SO-DIMM connector. This means that anyone will be able to design a replacement SoM to power Reform with a completely different CPU or an FPGA, for example.
So long as you can produce a pin compatible board, the exact details of that board actually don't seem to matter. My first thought when I saw this was "I wonder if you could create a conversion board for CM4 modules" and sure enough the creator of the laptop is working on exactly that:
https://twitter.com/mntmn/status/1462833241933627400
If they can actually pull off a CM4 compatibility board, I'd be super compelled to buy one knowing there's a growing ecosystem of compatible SoMs.