{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
  };

  outputs = { self, nixpkgs, rust-overlay }: let
    system = "x86_64-linux";
    pkgs = import nixpkgs {
      inherit system;
      overlays = [rust-overlay.overlays.default];
    };

    toolchain = pkgs.rust-bin.fromRustupToolchainFile ./toolchain.toml;
  in {
    devShells.${system}.default = pkgs.mkShell {
      packages = [
        toolchain
        pkgs.rust-analyzer-unwrapped

        pkgs.openocd
        pkgs.gcc-arm-embedded
        pkgs.probe-rs
      ];

      RUST_SRC_PATH = "${toolchain}/lib/rustlib/src/rust/library";
    };
  };
}