humpback-dds/flake.nix

{
  description = "Firmware for MQTT-controlled 4-channel DDS signal generator using Urukul, Humpback and STM32 NUCLEO.";

  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-21.11;
  inputs.mozilla-overlay = { url = github:mozilla/nixpkgs-mozilla; flake = false; };
  inputs.src-migen = { url = github:m-labs/migen; flake = false; };

  outputs = { self, nixpkgs, mozilla-overlay, src-migen }:
    let
      pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ (import mozilla-overlay) ]; };
      rustManifest = pkgs.fetchurl {
        url = "https://static.rust-lang.org/dist/2020-10-30/channel-rust-nightly.toml";
        sha256 = "0iygcwzh8s0lfdghj5809krvzifc1ii1wm4sd3qqn7s0rz1s14hi";
      };

      migen = pkgs.python3Packages.buildPythonPackage rec {
        name = "migen";
        src = src-migen;
        propagatedBuildInputs = [ pkgs.python3Packages.colorama ];
      };

      targets = [
        "thumbv7em-none-eabihf"
      ];
      rustChannelOfTargets = _channel: _date: targets:
        (pkgs.lib.rustLib.fromManifestFile rustManifest {
          inherit (pkgs) stdenv lib fetchurl patchelf;
          }).rust.override {
          inherit targets;
          extensions = ["rust-src"];
        };
      rust = rustChannelOfTargets "nightly" null targets;
      rustPlatform = pkgs.recurseIntoAttrs (pkgs.makeRustPlatform {
        rustc = rust;
        cargo = rust;
      });

      humpback-dds = rustPlatform.buildRustPackage rec {
        name = "humpback-dds";
        version = "0.0.0";

        src = self;
        cargoLock = { 
          lockFile = ./Cargo.lock;
          outputHashes = {
            "SaiTLS-0.1.0" = "sha256-T3hyASQGZAXGLKfOB3mh33VrvRlYSMc1CJdX4XvDFrQ=";
            "rsa-0.3.0" = "sha256-9X2kDAOu0HG94HhwYoUtX/ezq99w7u95XMzn3h/JUwk=";
            "minimq-0.1.0" = "sha256-yPqMAwyusZZW7571Jn3QVYK2jqmuSMNU6LiZXRYAGGM=";
            "smoltcp-0.6.0" = "sha256-BCqcphWF3AotQfuIFYhDiWIMhh2eUCuqD4MPz4dASQ4=";
          };
        };

        nativeBuildInputs = [
          pkgs.llvm
          pkgs.yosys
          pkgs.nextpnr
          pkgs.icestorm
          (pkgs.python3.withPackages(ps: [ migen ]))
        ];

        buildPhase = ''
          cargo build --release --bin humpback-dds
        '';

        installPhase = ''
          mkdir -p $out $out/nix-support
          cp target/thumbv7em-none-eabihf/release/humpback-dds $out/humpback-dds.elf
          echo file binary-dist $out/humpback-dds.elf >> $out/nix-support/hydra-build-products
          llvm-objcopy -O binary target/thumbv7em-none-eabihf/release/humpback-dds $out/humpback-dds.bin
          echo file binary-dist $out/humpback-dds.bin >> $out/nix-support/hydra-build-products
        '';

        doCheck = false;
        dontFixup = true;
      };
    in {
      packages.x86_64-linux = {
        inherit humpback-dds;
      };

      hydraJobs = {
        inherit humpback-dds;
      };

      devShell.x86_64-linux = pkgs.mkShell {
        name = "humpback-dds-dev-shell";
        buildInputs = with pkgs; [
          rustPlatform.rust.rustc
          rustPlatform.rust.cargo
          openocd dfu-util 
          yosys nextpnr icestorm
          ] ++ (with python3Packages; [
            numpy matplotlib migen
          ]);
      };
      defaultPackage.x86_64-linux = humpback-dds;
    };
}