{ description = "A Nix-flake-based Node.js development environment"; inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1"; # unstable Nixpkgs outputs = { self, ... }@inputs: let supportedSystems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" ]; forEachSupportedSystem = f: inputs.nixpkgs.lib.genAttrs supportedSystems ( system: f { inherit system; pkgs = import inputs.nixpkgs { inherit system; overlays = [ inputs.self.overlays.default ]; }; } ); in { overlays.default = final: prev: rec { nodejs = prev.nodejs; yarn = (prev.yarn.override { inherit nodejs; }); }; devShells = forEachSupportedSystem ( { pkgs, system }: { default = pkgs.mkShellNoCC { packages = with pkgs; [ nodejs pnpm yarn bun self.formatter.${system} ]; }; } ); formatter = forEachSupportedSystem ({ pkgs, ... }: pkgs.nixfmt); }; }