{
  inputs = { fenix.url = "github:nix-community/fenix"; };

  outputs = { self, nixpkgs, flake-utils, fenix }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ fenix.overlays.default ];
        };

        toolchain = pkgs.fenix.stable;

        targetPkgs = pkgs.pkgsCross.riscv64;
      in rec {
        legacyPackages = pkgs;

        devShell = pkgs.mkShell {
          inputsFrom = [ ];

          packages = (with pkgs; [
            cargo-watch
            cargo-deny
            cargo-edit

            targetPkgs.stdenv.cc
            (qemu.override {
              hostCpuTargets = [ "${targetPkgs.system}-user" ];
            })
          ]) ++ (with toolchain; [ cargo rustc rustfmt clippy ]);
        };
      });
}