add esp-idf tooling

esp-idf.nix

@@ -0,0 +1,20 @@
+{
+  pkgs ? import <nixpkgs> {},
+  system ? builtins.currentSystem,
+}:
+pkgs.stdenv.mkDerivation rec {
+  pname = "esp-idf";
+  version = "5.4";
+  src = pkgs.fetchFromGitHub {
+    owner = "espressif";
+    repo = "esp-idf";
+    rev = "v${version}";
+    fetchSubmodules = true;
+    hash = "sha256-9OQ/0DGwgfR3MkRWd6zSe1FD3Ywt4Ugw8J/BFu1Vfw0=";
+  };
+
+  buildInputs = with pkgs; [
+    python3
+    libusb1
+  ];
+}

esp-rom-elfs.nix

@@ -0,0 +1,21 @@
+{pkgs}:
+pkgs.stdenv.mkDerivation rec {
+  pname = "esp-rom-elfs";
+  version = "20241011";
+  src =
+    builtins.fetchurl
+    {
+      url = "https://github.com/espressif/${pname}/releases/download/${version}/${pname}-${version}.tar.gz";
+      sha256 = "sha256:1ag9z459pgr7rmjxqfl8a6mayjiqffqmbvmzixicf8d4ch0h07wj";
+    };
+
+  preferLocalBuild = true;
+
+  dontUnpack = true;
+
+  installPhase = ''
+    mkdir -p "$out"
+    cd "$out"
+    tar -xf $src
+  '';
+}

flake.lock

@@ -1,5 +1,21 @@
 {
   "nodes": {
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -34,10 +50,46 @@
         "type": "github"
       }
     },
+    "nixpkgs-python": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1733319315,
+        "narHash": "sha256-cFQBdRmtIZFVjr2P6NkaCOp7dddF93BC0CXBwFZFaN0=",
+        "owner": "cachix",
+        "repo": "nixpkgs-python",
+        "rev": "01263eeb28c09f143d59cd6b0b7c4cc8478efd48",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "nixpkgs-python",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1719253556,
+        "narHash": "sha256-A/76RFUVxZ/7Y8+OMVL1Lc8LRhBxZ8ZE2bpMnvZ1VpY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "fc07dc3bdf2956ddd64f24612ea7fc894933eb2e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-python": "nixpkgs-python"
       }
     },
     "systems": {

flake.nix

@@ -4,20 +4,28 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs-python.url = "github:cachix/nixpkgs-python";
   };
 
   outputs = {
     nixpkgs,
+    nixpkgs-python,
     flake-utils,
     ...
   }:
     flake-utils.lib.eachDefaultSystem (
       system: let
         pkgs = nixpkgs.legacyPackages.${system};
+        pkgs-python = nixpkgs-python.packages.${system};
       in {
         packages = rec {
           rust = import ./rust.nix {inherit pkgs system;};
           clang = import ./clang.nix {inherit pkgs system;};
+          esp-idf = import ./esp-idf.nix {inherit pkgs system;};
+          openocd-esp32 = import ./openocd-esp32.nix {inherit pkgs system;};
+          xtensa-esp-elf-gdb = import ./xtensa-esp-elf-gdb.nix {inherit pkgs pkgs-python system;};
+          xtensa-esp-elf = import ./xtensa-esp-elf.nix {inherit pkgs system;};
+          esp-rom-elfs = import ./esp-rom-elfs.nix {inherit pkgs;};
           default = rust;
         };
       }

openocd-esp32.nix

@@ -0,0 +1,38 @@
+{
+  pkgs,
+  system,
+}: let
+  systems_table = {
+    "x86_64-linux" = {
+      system = "linux-amd64";
+      hash = "1pw54ja4fmhy4rlaq8hirp5na8xvj5pah2azmnz494n9dl1hyaz8";
+    };
+  };
+  system_download = systems_table.${system};
+in
+  pkgs.stdenv.mkDerivation rec {
+    pname = "openocd-esp32";
+    version = "0.12.0-esp32-20241016";
+    src =
+      builtins.fetchurl
+      {
+        url = "https://github.com/espressif/${pname}/releases/download/v${version}/${pname}-${system_download.system}-${version}.tar.gz";
+        sha256 = system_download.hash;
+      };
+
+    preferLocalBuild = true;
+
+    nativeBuildInputs = with pkgs; [
+      autoPatchelfHook
+    ];
+
+    buildInputs = with pkgs; [
+      systemd
+      libusb1
+    ];
+
+    installPhase = ''
+      mkdir -p "$out"
+      cp -R ./{bin,share} "$out"
+    '';
+  }

xtensa-esp-elf-gdb.nix

@@ -0,0 +1,43 @@
+{
+  pkgs,
+  pkgs-python,
+  system,
+}: let
+  systems_table = {
+    "x86_64-linux" = {
+      system = "x86_64-linux-gnu";
+      hash = "sha256:0g9lk7snccn5464fs1mpyhylmvra0bvn6icqpbsxgixis94l6xqq";
+    };
+  };
+  system_download = systems_table.${system};
+in
+  pkgs.stdenv.mkDerivation rec {
+    pname = "xtensa-esp-elf-gdb";
+    version = "15.2_20241112";
+    src =
+      builtins.fetchurl
+      {
+        url = "https://github.com/espressif/binutils-gdb/releases/download/esp-gdb-v${version}/${pname}-${version}-${system_download.system}.tar.gz";
+        sha256 = system_download.hash;
+      };
+
+    preferLocalBuild = true;
+
+    nativeBuildInputs = with pkgs; [
+      autoPatchelfHook
+    ];
+
+    buildInputs = with pkgs; [
+      pkgs-python."3.8"
+      pkgs-python."3.9"
+      pkgs-python."3.10"
+      pkgs-python."3.11"
+      pkgs-python."3.12"
+      pkgs-python."3.13"
+    ];
+
+    installPhase = ''
+      mkdir -p "$out"
+      cp -R ./{bin,lib} "$out"
+    '';
+  }

xtensa-esp-elf.nix

@@ -0,0 +1,37 @@
+{
+  pkgs,
+  system,
+}: let
+  systems_table = {
+    "x86_64-linux" = {
+      system = "x86_64-linux-gnu";
+      hash = "sha256:1s86y3wss3vp5r6c076gz23hs62rkx1qc6vffjp42md86krrv1di";
+    };
+  };
+  system_download = systems_table.${system};
+in
+  pkgs.stdenv.mkDerivation rec {
+    pname = "xtensa-esp-elf";
+    version = "14.2.0_20241119";
+    src =
+      builtins.fetchurl
+      {
+        url = "https://github.com/espressif/crosstool-NG/releases/download/esp-${version}/${pname}-${version}-${system_download.system}.tar.gz";
+        sha256 = system_download.hash;
+      };
+
+    preferLocalBuild = true;
+
+    nativeBuildInputs = with pkgs; [
+      autoPatchelfHook
+    ];
+
+    buildInputs = with pkgs; [
+      pkgs.stdenv.cc.cc
+    ];
+
+    installPhase = ''
+      mkdir -p "$out"
+      cp -R ./{bin,lib} "$out"
+    '';
+  }