Platformio

PlatformIO is a SDK/toolchain manager for various microcontrollers and and embedded platforms i.e. esp32.

Basic development environment

{ pkgs ? import <nixpkgs> {} }:
let
in
  pkgs.mkShell {
    buildInputs = [
      pkgs.platformio
      # optional: needed as a programmer i.e. for esp32
      # pkgs.avrdude
    ];
}

NixOS

Add the required udev rules.

{
  services.udev.packages = [ pkgs.platformio ];
}

Use in vscode

To use the nix-shell provided PlatformIO rather the builtin one first open vscode within the nix-shell and also modify it's settings.json to also contain the following line:

{
      "platformio-ide.useBuiltinPIOCore": false,
}