This is the direction a lot of RTOSs go, for example Zephyr (https://docs.zephyrproject.org/3.0.0/guides/portability/posix.html https://docs.zephyrproject.org/3

This is the direction a lot of RTOSs go, for example Zephyr (https://docs.zephyrproject.org/3.0.0/guides/portability/posix.html https://docs.zephyrproject.org/3.0.0/guides/portability/posi...) and FreeRTOS (https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_POSIX/index.html https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_POSIX/i...).