{ description = "thing: stuff and things"; inputs.nixpkgs.url = "nixpkgs/nixos-24.11"; outputs = { self , nixpkgs , }: let supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ]; forAllSystems = nixpkgs.lib.genAttrs supportedSystems; nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; }); in { packages = forAllSystems (system: let pkgs = nixpkgsFor.${system}; in { thing = pkgs.stdenv.mkDerivation { pname = "thing"; version = "v0.0.0"; src = ./.; buildInputs = with pkgs; [ ocaml opam ocamlformat pkg-config ] ++ (with pkgs.ocamlPackages; [ dune_3 odoc ]); buildPhase = '' ocamlc -o thing thing.ml ''; installPhase = '' mkdir -p $out/bin mv thing $out/bin ''; }; }); defaultPackage = forAllSystems (system: self.packages.${system}.thing); devShells = forAllSystems (system: let pkgs = nixpkgsFor.${system}; in { default = pkgs.mkShell { shellHook = '' PS1='\u@\h:\@; ' nix run github:qbit/xin#flake-warn echo "OCaml `${pkgs.ocaml}/bin/ocaml --version`" ''; nativeBuildInputs = with pkgs; [ ocaml opam ocamlformat pkg-config ] ++ (with pkgs.ocamlPackages; [ dune_3 odoc ]); }; }); }; }