I am trying to fit with everything I will be running inside of 1G NAND. I do need just access to all hardware and working console with few basic tools. We are talking bare minimum with SSH server. In my application card is meant to be as external media or possible future extension for data storage. All applications running will be C/C++ binaries. Maybe compiled and debugged on the RockPi, but not necessarily. I tried Debian and lack of free space did not let me do much even on minimal image. Then I tried DietPi, which (quite smugly) claims to be the best of best minimal distros. This one filled drive without even letting me to console after deciding it will upgrade kernel on first boot.
Is there really something working that fits in 1G NAND or is this feature just good on the paper without any good use? Are there any completely stripped distros with just what is truly necessary?