From 1bc0910b3766b92577e1bd07a5704eab98e6c968 Mon Sep 17 00:00:00 2001
From: adisbladis <adisbladis@gmail.com>
Date: Tue, 6 Feb 2024 15:52:10 +1300
Subject: [PATCH] Initial

---
 README.md   |   3 +
 default.nix | 122 ++++++++++++++++++++
 flake.lock  | 316 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix   |  33 ++++++
 python.nix  |  26 +++++
 sdk.json    | 106 ++++++++++++++++++
 update-sdk  |   6 +
 7 files changed, 612 insertions(+)
 create mode 100644 README.md
 create mode 100644 default.nix
 create mode 100644 flake.lock
 create mode 100644 flake.nix
 create mode 100644 python.nix
 create mode 100644 sdk.json
 create mode 100755 update-sdk

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..9d51cc7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# zephyr-nix
+
+Develop Zephyr projects using Nix
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..2bcac98
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,122 @@
+{ callPackage
+, stdenv
+, zephyr-src
+, pyproject-nix
+, lib
+, fetchurl
+, which
+, autoPatchelfHook
+, cmake
+, python38
+, pkgs
+}:
+
+let
+  sdk = lib.importJSON ./sdk.json;
+  inherit (sdk) version;
+
+  python3 = python38;
+
+  platform =
+    if stdenv.isLinux then "linux"
+    else if stdenv.isDarwin then "macos"
+    else throw "Unsupported platform";
+
+  arch =
+    if stdenv.isLinux then stdenv.hostPlatform.linuxArch
+    else if stdenv.isDarwin then stdenv.hostPlatform.darwinArch
+    else throw "Unsupported arch";
+
+  baseURL = "https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v${version}";
+
+  fetchSDKFile = file: fetchurl {
+    url = "${baseURL}/${file}";
+    sha256 = sdk.files.${file};
+  };
+
+in
+{
+  # Zephyr/west Python environment.
+  pythonEnv = callPackage ./python.nix {
+    inherit zephyr-src;
+    inherit pyproject-nix;
+  };
+
+  # Pre-package Zephyr SDK.
+  sdk = stdenv.mkDerivation (finalAttrs: {
+    pname = "zephyr-sdk";
+    inherit version;
+
+    srcs = [
+      (fetchSDKFile "zephyr-sdk-${version}_${platform}-${arch}_minimal.tar.xz")
+    ] ++ map fetchSDKFile (map (target: "toolchain_${platform}-${arch}_${target}.tar.xz") finalAttrs.targets);
+
+    targets = [ ];  # Zephyr targets
+
+    nativeBuildInputs = [ which cmake autoPatchelfHook ];
+
+    buildInputs = [ stdenv.cc.cc python38 ];
+
+    dontBuild = true;
+    dontUseCmakeConfigure = true;
+
+    sourceRoot = ".";
+
+    installPhase = ''
+      runHook preInstall
+
+      rm zephyr-sdk-$version/zephyr-sdk-${arch}-hosttools-standalone-*.sh
+      rm zephyr-sdk-$version/setup.sh;
+
+      mv zephyr-sdk-$version $out
+      mv $(ls | grep -v env-vars) $out/
+
+      runHook postInstall
+    '';
+  });
+
+  # Binary host tools provided by the Zephyr project.
+  hosttools = stdenv.mkDerivation {
+    pname = "zephyr-sdk-hosttools";
+    inherit version;
+
+    src = fetchSDKFile "hosttools_${platform}-${arch}.tar.xz";
+
+    nativeBuildInputs = [ which autoPatchelfHook ];
+
+    buildInputs = [ python3 ];
+
+    dontBuild = true;
+
+    sourceRoot = ".";
+
+    installPhase = ''
+      runHook preInstall
+      mkdir -p $out/usr/share/zephyr/hosttools
+      ./zephyr-sdk-${arch}-hosttools-standalone-*.sh -d $out/usr/share/zephyr/hosttools
+      ln -s $out/usr/share/zephyr/hosttools/sysroots/${arch}-pokysdk-${platform}/usr/bin $out/bin
+      runHook postInstall
+    '';
+  };
+
+  # A variant of hosttools, but all tools are taken from nixpkgs.
+  hosttools-nix = stdenv.mkDerivation {
+    name = "zephyr-sdk-hosttools-nix";
+
+    dontUnpack = true;
+    dontBuild = true;
+
+    propagatedBuildInputs = with pkgs; [
+      bossa
+      dtc
+      nettle
+      openocd
+      qemu_full
+      shared-mime-info
+    ];
+
+    installPhase = ''
+      mkdir $out
+    '';
+  };
+}
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..a086036
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,316 @@
+{
+  "nodes": {
+    "crane": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "pyproject-nix",
+          "mdbook-nixdoc",
+          "nixpkgs"
+        ],
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1688772518,
+        "narHash": "sha256-ol7gZxwvgLnxNSZwFTDJJ49xVY5teaSvF7lzlo3YQfM=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "8b08e96c9af8c6e3a2b69af5a7fa168750fcf88e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "pyproject-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1701473968,
+        "narHash": "sha256-YcVE5emp1qQ8ieHUnxt1wCZCC3ZfAS+SRRWZ2TMda7E=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "34fed993f1674c8d06d58b37ce1e0fe5eebcb9f5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-root": {
+      "locked": {
+        "lastModified": 1692742795,
+        "narHash": "sha256-f+Y0YhVCIJ06LemO+3Xx00lIcqQxSKJHXT/yk1RTKxw=",
+        "owner": "srid",
+        "repo": "flake-root",
+        "rev": "d9a70d9c7a5fd7f3258ccf48da9335e9b47c3937",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "flake-root",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1687709756,
+        "narHash": "sha256-Y5wKlQSkgEK2weWdOu4J3riRd+kV/VCgHsqLNTTWQ/0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "dbabf0ca0c0c4bce6ea5eaf65af5cb694d2082c7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "mdbook-nixdoc": {
+      "inputs": {
+        "crane": "crane",
+        "flake-parts": [
+          "pyproject-nix",
+          "flake-parts"
+        ],
+        "nix-github-actions": [
+          "pyproject-nix",
+          "nix-github-actions"
+        ],
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ],
+        "treefmt-nix": [
+          "pyproject-nix",
+          "treefmt-nix"
+        ]
+      },
+      "locked": {
+        "lastModified": 1690987907,
+        "narHash": "sha256-p9iXhgEhV4Z5DPlS+9HlMOFBAc8v2B9SR5qEgOy+Qos=",
+        "owner": "adisbladis",
+        "repo": "mdbook-nixdoc",
+        "rev": "8563c0a3abe68f046a890846df406fcbaeb3d5b5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "adisbladis",
+        "repo": "mdbook-nixdoc",
+        "type": "github"
+      }
+    },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1701208414,
+        "narHash": "sha256-xrQ0FyhwTZK6BwKhahIkUVZhMNk21IEI1nUcWSONtpo=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "93e39cc1a087d65bcf7a132e75a650c44dd2b734",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1706913249,
+        "narHash": "sha256-x3M7iV++CsvRXI1fpyFPduGELUckZEhSv0XWnUopAG8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e92b6015881907e698782c77641aa49298330223",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1703255338,
+        "narHash": "sha256-Z6wfYJQKmDN9xciTwU3cOiOk+NElxdZwy/FiHctCzjU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "6df37dc6a77654682fe9f071c62b4242b5342e04",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "proc-flake": {
+      "locked": {
+        "lastModified": 1692742849,
+        "narHash": "sha256-Nv8SOX+O6twFfPnA9BfubbPLZpqc+UeK6JvIWnWkdb0=",
+        "owner": "srid",
+        "repo": "proc-flake",
+        "rev": "25291b6e3074ad5dd573c1cb7d96110a9591e10f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "proc-flake",
+        "type": "github"
+      }
+    },
+    "pyproject-nix": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "flake-root": "flake-root",
+        "mdbook-nixdoc": "mdbook-nixdoc",
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": "nixpkgs_2",
+        "proc-flake": "proc-flake",
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1705085606,
+        "narHash": "sha256-Hj+uqq/VXlKQwyKs85Jd0JcP49lI09Q2PTNX4S2FIGE=",
+        "owner": "nix-community",
+        "repo": "pyproject.nix",
+        "rev": "1e3581327260c4b4633f7b2ae923ee039f4446fa",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "pyproject.nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "pyproject-nix": "pyproject-nix",
+        "zephyr": "zephyr"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": [
+          "pyproject-nix",
+          "mdbook-nixdoc",
+          "crane",
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "pyproject-nix",
+          "mdbook-nixdoc",
+          "crane",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1688351637,
+        "narHash": "sha256-CLTufJ29VxNOIZ8UTg0lepsn3X03AmopmaLTTeHDCL4=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "f9b92316727af9e6c7fee4a761242f7f46880329",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1702979157,
+        "narHash": "sha256-RnFBbLbpqtn4AoJGXKevQMCGhra4h6G2MPcuTSZZQ+g=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "2961375283668d867e64129c22af532de8e77734",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    },
+    "zephyr": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1697797249,
+        "narHash": "sha256-72QFsKOWkF6BiP4XgZAXXSBcN4t6yvhAeXCpgCYrhe8=",
+        "owner": "zephyrproject-rtos",
+        "repo": "zephyr",
+        "rev": "a6eef0ba3755f2530c5ce93524e5ac4f5be30194",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zephyrproject-rtos",
+        "ref": "v3.5.0",
+        "repo": "zephyr",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..224d0df
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,33 @@
+{
+  description = "Build Zephyr projects on Nix";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    pyproject-nix.url = "github:nix-community/pyproject.nix";
+
+    zephyr.url = "github:zephyrproject-rtos/zephyr/v3.5.0";
+    zephyr.flake = false;
+  };
+
+  outputs = { self, nixpkgs, zephyr, pyproject-nix }: (
+    let
+      inherit (nixpkgs) lib;
+      forAllSystems = lib.genAttrs lib.systems.flakeExposed;
+    in
+    {
+      packages =
+        forAllSystems
+        (
+          system:
+          let
+            pkgs = nixpkgs.legacyPackages.${system};
+          in
+          pkgs.callPackages ./. {
+            zephyr-src = zephyr;
+            inherit pyproject-nix;
+          }
+        );
+    }
+  );
+}
diff --git a/python.nix b/python.nix
new file mode 100644
index 0000000..6050ce8
--- /dev/null
+++ b/python.nix
@@ -0,0 +1,26 @@
+{ python3
+, zephyr-src
+, pyproject-nix
+, clang-tools
+, gitlint
+}:
+
+let
+  python = python3.override {
+    self = python;
+    packageOverrides = self: super: {
+      clang-format = clang-tools;
+      inherit gitlint;
+    };
+  };
+
+  project = pyproject-nix.lib.project.loadRequirementsTxt {
+    requirements = zephyr-src + "/scripts/requirements.txt";
+  };
+
+in
+assert project.validators.validateVersionConstraints { inherit python; } == { };
+python.withPackages (project.renderers.withPackages {
+  inherit python;
+  extraPackages = ps: [ ps.west ];
+})
diff --git a/sdk.json b/sdk.json
new file mode 100644
index 0000000..71ed702
--- /dev/null
+++ b/sdk.json
@@ -0,0 +1,106 @@
+{
+  "files": {
+    "hosttools_linux-x86_64.tar.xz": "b9a1effc8c0bb089ac3b06e0981a04365cb3328042d766ec2715b4d7bdd4b9d0",
+    "toolchain_linux-x86_64_aarch64-zephyr-elf.tar.xz": "ebd062bdcdc8cbd111106d112147d845d3643260d1ed26135f4f041706042b8b",
+    "toolchain_linux-x86_64_arc-zephyr-elf.tar.xz": "51bfa93d460482340d513b8c0ce38e77306ec08f9017d8ffb8d631c91bf6ace4",
+    "toolchain_linux-x86_64_arc64-zephyr-elf.tar.xz": "59973703ed247af5bf2a273e702d1368d7b38f7dafcc2a16caaf5b55bddac896",
+    "toolchain_linux-x86_64_arm-zephyr-eabi.tar.xz": "d4278e95af74f8e9210b417e1cdc3ed45936cf6db9685d4174000a1a95b9f095",
+    "toolchain_linux-x86_64_microblazeel-zephyr-elf.tar.xz": "1019eef20d2a4392c325bfa3a691d739814e32db83b86d20571f8c08dd8c9c04",
+    "toolchain_linux-x86_64_mips-zephyr-elf.tar.xz": "28a7a3726c70fee903b3e00187935d223b1212fe3b82d381f6c999ca24d21fa6",
+    "toolchain_linux-x86_64_nios2-zephyr-elf.tar.xz": "b5384fce23b7a2a035b1a9a6b7309d25a31f6f395995358b60419459ffb46054",
+    "toolchain_linux-x86_64_riscv64-zephyr-elf.tar.xz": "95fd7dc49a7650bb740c721fa092784f73b53a41007f0beb3764c83ad71509d4",
+    "toolchain_linux-x86_64_sparc-zephyr-elf.tar.xz": "907218cad1a24a538174d78e91eb4775ef0148b32e9b9bb8d1b0f02f9e4e7de0",
+    "toolchain_linux-x86_64_x86_64-zephyr-elf.tar.xz": "a3474be6ba95d5c593e81996d3fcee5c3a283ca3c8fa148e35bb5494ddf39826",
+    "toolchain_linux-x86_64_xtensa-dc233c_zephyr-elf.tar.xz": "b4f4793a53e3af52be727d17ad7b23b8ad49ad897a460b15b936460e25ffb4bf",
+    "toolchain_linux-x86_64_xtensa-espressif_esp32_zephyr-elf.tar.xz": "07e6a82838981ac925dd632c88639253d729da628beb2bececaf79e9d771e220",
+    "toolchain_linux-x86_64_xtensa-espressif_esp32s2_zephyr-elf.tar.xz": "081edae1af7ffb07e2529a1afb973f9025c70732d6b7ec0aa7901324b64074bc",
+    "toolchain_linux-x86_64_xtensa-espressif_esp32s3_zephyr-elf.tar.xz": "d53f685a9e0d64de6a6e4b71b98bcf773d68653beb0ce52619626c6a81296275",
+    "toolchain_linux-x86_64_xtensa-intel_ace15_mtpm_zephyr-elf.tar.xz": "1d20422dcf6f38e524063d943ee7fb3b5620d6b31e47772181f21071cad5156c",
+    "toolchain_linux-x86_64_xtensa-intel_tgl_adsp_zephyr-elf.tar.xz": "8d08650f1256f8b9a06e0a59423f50a71a53bb739f707890e7858477b1976709",
+    "toolchain_linux-x86_64_xtensa-mtk_mt8195_adsp_zephyr-elf.tar.xz": "5922a5478a0dd2a89cdb435bad8bbfebf4234357679f16cb0cb8d46fcc2dd415",
+    "toolchain_linux-x86_64_xtensa-nxp_imx8m_adsp_zephyr-elf.tar.xz": "2856796517e277385a6f265ea372463c62138ccd3d0684dfc3ef66be1866f407",
+    "toolchain_linux-x86_64_xtensa-nxp_imx8ulp_adsp_zephyr-elf.tar.xz": "62bedb41be106c549764ed836345ede57a970a50dc4f8fde6835f00c4aa41c68",
+    "toolchain_linux-x86_64_xtensa-nxp_imx_adsp_zephyr-elf.tar.xz": "ecf705b1b39a75861023be699a850dc5901880e7ccd27dc61e5f6af1e070cde3",
+    "toolchain_linux-x86_64_xtensa-nxp_rt500_adsp_zephyr-elf.tar.xz": "4ceabfbcfab6a80fc3bc7894e1bbd86e06ab249cf48f1e6764df90d65223ae2f",
+    "toolchain_linux-x86_64_xtensa-nxp_rt600_adsp_zephyr-elf.tar.xz": "d318b596dcc361a1e4c6979fad9c4ef1de9fe73daf05f398e1aa73900251ab14",
+    "toolchain_linux-x86_64_xtensa-sample_controller_zephyr-elf.tar.xz": "db6822e42cfd001b8301ebb9f60c7b235ef16d827575b4df7e7c4cd27f426393",
+    "toolchain_macos-aarch64_aarch64-zephyr-elf.tar.xz": "1c8ab9a091717b8ec22c015d8c66d96dc0d9c28e57de2dfd1d15352a4c0ca891",
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+  },
+  "version": "0.16.5"
+}
diff --git a/update-sdk b/update-sdk
new file mode 100755
index 0000000..e831489
--- /dev/null
+++ b/update-sdk
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+version=$1
+
+curl -L "https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v$version/sha256.sum" | jq -R -n "[ inputs | split(\" \") | {(.[2]): .[0]} ] | add | { \"files\": ., \"version\": \"$version\"}" > sdk.json