{
  description = "Sausage: WASI actors with a message broker";

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

  outputs = { nixpkgs, rust-overlay, ... }:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; overlays = [ rust-overlay.overlays.default ]; };
      rust = pkgs.rust-bin.stable.latest.default.override {
        targets = [ "wasm32-wasip2" ];
        extensions = [ "rust-src" ];
      };
    in {
      devShells.${system}.default = pkgs.mkShell {
        packages = [ rust pkgs.wasmtime pkgs.wasm-tools pkgs.pkg-config pkgs.openssl ];
        shellHook = ''
          export CARGO_HOME="$PWD/.cargo-home"
        '';
      };
    };
}