{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    petalpkgs.url = "git+https://cl.forkos.org/nixpkgs";
  };

  outputs = { self, nixpkgs, flake-utils, petalpkgs }:
    flake-utils.lib.eachDefaultSystem (system:
      let pkgs = import nixpkgs { inherit system; };
      in {
        # For local development...
        devShell = pkgs.mkShell {
          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [ pkgs.stdenv.cc.cc.lib ];

          buildInputs = with pkgs; [ bun ];

          shellHook = ''
            ln -sf ${petalpkgs.outPath} .petalpkgs
          '';
        };

        # ... and remote deployment.
        # packages = {};

      });
}