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

  outputs = { self, nixpkgs, rust-overlay, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        overlays = [ (import rust-overlay) ];
        pkgs = import nixpkgs {
          inherit system overlays;
        };
        rust-toolchain = pkgs.rust-bin.stable.latest.default.override
          {
            extensions = [ "rust-src" ];
            targets = [
              "wasm32-unknown-unknown"
            ];
          };
      in
      with pkgs;
      {
        devShells.default = mkShell {
          buildInputs = [
            rust-toolchain
          ];
        };
      }
    );
}