Rust xtensa freedesktop sdk extension

Overview

This includes an experimental port of rust for xtensa architecture (rust-xtensa) and esp32 toolchain.

Build

flatpak-builder --user --install build-dir org.freedesktop.Sdk.Extension.rust-xtensa.yml

Use with VS Code

FLATPAK_ENABLE_SDK_EXT=rust-xtensa flatpak run com.visualstudio.code