{ pkgs ? import (builtins.fetchGit { url = git://github.com/NixOS/nixpkgs-channels; }) {},
}:

with pkgs;
let
  rust-thumb-crates = callPackage ./rust-thumb-crates.nix { inherit (rustPlatform.rust) rustc; };
  llvm-rust-src = fetchFromGitHub {
    owner = "rust-lang";
    repo = "llvm-project";
    rev = "rustc/8.0-2019-03-18";
    sha256 = "0lvlf76yyjk61wl1y6l83w84g8y06vz4mwjcxwxcgdmh480ha8vb";
  };
  lld = llvmPackages_8.lld.override {
    fetch = name: _sha256: builtins.toPath "${llvm-rust-src}/${name}";
  };
  buildStm32Firmware = { name, src, cargoSha256 }:
    rustPlatform.buildRustPackage rec {
      inherit name;
      version = "0.0.0";

      inherit src cargoSha256;

      buildInputs = [ lld ];
      buildPhase = ''
        export CARGO_HOME=$(mktemp -d cargo-home.XXX)
        export RUSTFLAGS="-L ${rust-thumb-crates}/lib/rustlib/thumbv7em-none-eabihf/lib -C linker-flavor=ld.lld -C linker=lld"
        cargo build --release -v -v
      '';
      dontStrip = true;
      dontPatchELF = true;

      doCheck = false;
      installPhase = ''
        mkdir -p $out $out/nix-support
        cp target/thumbv7em-none-eabihf/release/${name} $out/${name}.elf
        echo file binary-dist $out/${name}.elf >> $out/nix-support/hydra-build-products
      '';
    };
in
  {
    stabilizer = buildStm32Firmware {
      name = "stabilizer";
      src = <stabilizerSrc>;
      cargoSha256 = "184pr64z71h5wi0n9k2ddjyzklbg1cw5vly4ppgck2q6zlb3qbm4";
    };
    thermostat = buildStm32Firmware {
      name = "thermostat";
      src = <thermostatSrc>;
      cargoSha256 = "1xbnd2j4akdf3fc62frb74vpghspkr58kbya2gyzqqdj2gfzy8dh";
    };
  }