shell.nix

{ pkgs ? import <nixpkgs> {}}:
let 
    # Uses this folder as the source for esp-rs-nix (in-repo nix-shell)
    esp-rs-src = pkgs.lib.sources.cleanSource ./.;

    # Examples for out-of-repo nix-shell usage below.
    #
    # # Use the latest release of esp-rs-nix
    # esp-rs-src = builtins.fetchTarball "https://github.com/leighleighleigh/esp-rs-nix/archive/master.tar.gz";
    #
    # # Use a pinned release of esp-rs-nix, at commit '0c3fa7245d38019e60c4ae56b2e98465c1b8a5dc'
    # esp-rs-src = pkgs.fetchFromGitHub {
    #   owner = "leighleighleigh";
    #   repo = "esp-rs-nix";
    #   rev = "0c3fa7245d38019e60c4ae56b2e98465c1b8a5dc";
    #   hash = "sha256-b5kb6gxqutHySWEoweNfKbZw1r7DkwqRC39RWsyFSLU=";
    # };
    
    # Call the package from wherever the source was obtained
    esp-rs = pkgs.callPackage "${esp-rs-src}/esp-rs/default.nix" {};
in
pkgs.mkShell rec {
    name = "esp-rs-nix";
    
    # You may wish to change these build inputs for your application
    buildInputs = [
        esp-rs
        pkgs.rustup
        pkgs.espflash
        pkgs.rust-analyzer
        pkgs.pkg-config
        pkgs.stdenv.cc
        pkgs.systemdMinimal
    ];

    shellHook = ''
    # Add a prefix 'esp-rs' to the shell prompt
    export PS1="(esp-rs)$PS1"

    # This variable is important - it tells rustup where to find the esp toolchain,
    # without needing to copy it into your local ~/.rustup/ folder.
    export RUSTUP_TOOLCHAIN=${esp-rs}
    '';
}