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by BatmanAoD 1558 days ago
Sure. You can re-implement everything starting with the Kernel, as long as you don't have to interface with any of the C microcode on the hardware itself. And, yeah, people are doing this, for instance with Redox OS.

But if you actually want to program something usable in conjunction with existing software, such as Linux, you need to use the C ABI. There is no alternative.