{ rustPlatform, rust-riscv32imc-crates, binutils-riscv }:

rustPlatform.buildRustPackage rec {
  name = "helloworld";
  version = "0.0.0";

  src = ./.;
  cargoSha256 = "1j8ipk7mwf6jqjnddpvkdydhgl7lfddxkv6p1vhzlfhqlf8am42j";

  buildPhase = ''
    export CARGO_HOME=$(mktemp -d cargo-home.XXX)
    export RUSTFLAGS="-L ${rust-riscv32imc-crates}/lib/rustlib/riscv32imc-unknown-none-elf/lib -C linker=${binutils-riscv}/bin/riscv32-unknown-elf-ld -C link-arg=-Tlink.x"
    cargo build --release --target riscv32imc-unknown-none-elf
  '';

  doCheck = false;
  installPhase = ''
    mkdir -p $out
    cp target/riscv32imc-unknown-none-elf/release/helloworld $out
  '';
}