The Rust language is gain some momentum as an alternative to C and C++ for embedded system (https://www.rust-lang.org/what/embedded) and it should be very useful to be able to develop NuttX applications using Rust language.

Sometime Yoshiro Sugino already ported the Rust standard libraries, but it was not a complete port and wasn't integrated on NuttX. Anyway this initial port could be used as starting point for some student willing to add official support on NuttX.

Also it needs to pave the way to support developing NuttX driver in Rust and an complement to C drivers.

Currently NuttX has support only for NOR Flash and eMMC as solid state storage.

Although for low-end embedded systems NOR Flash still much used, for some devices that need bigger storage, NAND Flash is a better option, because its price per MB is very low.

In the other NAND Flash brings many challenges: you need to map and track all the bad-blocks, you need to have a good filesystem for wear leveling. Currently the SmartFS and LittleFS offer some kind wear leveling for NOR Flash. It needs to be adapted to NAND Flash.

Device Tree will simplify the way as boards are configured to support NuttX. Currently for each board the developer/user need to manually create an initialization file for each feature or device (expect when the device is already in the common board folder).

Matias Nitsche (aka v0id) create a very descriptive and information explanation here: https://github.com/apache/incubator-nuttx/issues/1020

The goal for this project is to add Device Tree support for NuttX and let it to be configurable (low end board should be able to avoid using Device Tree for instance).

Micro-ROS (https://micro.ros.org) is a ROS2 support to Microcontrollers. Initially the project was developed over NuttX by Bosch and other EU organizations. Later on they added support to FreeRTOS and Zephyr. After that NuttX support started ageing and we didn't get anyone working to fix it (with few exceptions like Roberto Bucher work to test it with pysimCoder).