@mia@shrimptest.0x0.st@lucy @anemone guess the closest thing we got to an actual product like that was the first jolla phone, though it wasn’t THAT modular. the community made some extensions for it (detachable qwerty keyboard, epaper displays, solar chargers, etc.)
it was pretty clear only hackers would ever appreciate that sort of thing so they just used i2c and didn’t provide any special software support beyond exposing it via /dev