Add a shell for ESP32

flake.nix

@@ -37,6 +37,7 @@
       devShells = {
         esp-idf-full = import ./shells/esp-idf-full.nix { inherit pkgs; };
         esp32-idf = import ./shells/esp32-idf.nix { inherit pkgs; };
+        esp32-idf-rust = import ./shells/esp32-idf-rust.nix { inherit pkgs; };
         esp32c3-idf = import ./shells/esp32c3-idf.nix { inherit pkgs; };
         esp32s2-idf = import ./shells/esp32s2-idf.nix { inherit pkgs; };
         esp32s2-idf-rust = import ./shells/esp32s2-idf-rust.nix { inherit pkgs; };

pkgs/rust-xtensa-bin.nix

@@ -1,26 +1,22 @@
-{ version ? "1.80.0.0"
-, callPackage
-, rust
-, lib
-, stdenv
-, fetchurl
+{
+  version ? "1.86.0.0",
+  callPackage,
+  rust,
+  lib,
+  stdenv,
+  fetchurl,
 }:
 let
   component = import { };
   # Remove keys from attrsets whose value is null.
-  removeNulls = set:
-    removeAttrs set
-      (lib.filter (name: set.${name} == null)
-        (lib.attrNames set));
+  removeNulls = set: removeAttrs set (lib.filter (name: set.${name} == null) (lib.attrNames set));
   # FIXME: https://github.com/NixOS/nixpkgs/pull/146274
-  toRustTarget = platform:
-    if platform.isWasi then
-      "${platform.parsed.cpu.name}-wasi"
-    else
-      rust.toRustTarget platform;
+  toRustTarget =
+    platform:
+    if platform.isWasi then "${platform.parsed.cpu.name}-wasi" else rust.toRustTarget platform;
   mkComponentSet = callPackage ./rust/mk-component-set.nix {
     inherit toRustTarget removeNulls;
-    # src = 
+    # src =
 
   };
   mkAggregated = callPackage ./rust/mk-aggregated.nix { };
@@ -32,11 +28,11 @@ let
     srcs = {
       rustc = fetchurl {
         url = "https://github.com/esp-rs/rust-build/releases/download/v${version}/rust-${version}-x86_64-unknown-linux-gnu.tar.xz";
-        hash = "sha256-08yHjWmTZFkFEyT3Ypjx/cVc4aRJLNkITM2vjVPPV9U=";
+        hash = "sha256-CqqIgIvYfI10aXTRpS3TnyaMCpsRtdCaMnW3r+qN1V0=";
       };
       rust-src = fetchurl {
         url = "https://github.com/esp-rs/rust-build/releases/download/v${version}/rust-src-${version}.tar.xz";
-        hash = "sha256-7OIGrBpgOc8dJGTgdpu1AfV9J+VJ4N4Bw5X5l1psho8=";
+        hash = "sha256-EPoxNiYUk6XZfU886bmLruXMWCiXEf5vJCSY/09lspo=";
       };
     };
   };
@@ -45,9 +41,11 @@ in
 assert stdenv.system == "x86_64-linux";
 mkAggregated {
   pname = "rust-xtensa";
-  date = "2024-06-06";
+  date = "2025-06-07";
   inherit version;
   availableComponents = selComponents;
-  selectedComponents = [ selComponents.rustc selComponents.rust-src ];
+  selectedComponents = [
+    selComponents.rustc
+    selComponents.rust-src
+  ];
 }
-

shells/esp32-idf-rust.nix

@@ -0,0 +1,42 @@
+{ pkgs ? import ../default.nix }:
+pkgs.mkShell {
+  name = "esp-idf-esp32-rust";
+
+  buildInputs = with pkgs; [
+    esp-idf-esp32
+
+    # Tools required to use ESP-IDF.
+    git
+    wget
+    gnumake
+
+    flex
+    bison
+    gperf
+    pkg-config
+    cargo-generate
+
+    cmake
+    ninja
+
+    ncurses5
+
+    llvm-xtensa
+    llvm-xtensa-lib
+    rust-xtensa
+
+    espflash
+    ldproxy
+
+    python3
+    python3Packages.pip
+    python3Packages.virtualenv
+  ];
+  shellHook = ''
+    # fixes libstdc++ issues and libgl.so issues
+    export LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath [ pkgs.libxml2 pkgs.zlib pkgs.stdenv.cc.cc.lib ]}
+    export ESP_IDF_VERSION=v4.4.1
+    export LIBCLANG_PATH=${pkgs.llvm-xtensa-lib}/lib
+    export RUSTFLAGS="--cfg espidf_time64"
+  '';
+}