{ description = "A Nix-flake-based Node.js development environment"; inputs = { flake-utils.url = "github:numtide/flake-utils"; nixpkgs.url = "github:NixOS/nixpkgs"; }; outputs = { self, flake-utils, nixpkgs }: flake-utils.lib.eachDefaultSystem (system: let nodeOverlay = self: super: rec { nodejs = super.nodejs-18_x; pnpm = super.nodePackages.pnpm; yarn = (super.yarn.override { inherit nodejs; }); }; overlays = [ nodeOverlay ]; pkgs = import nixpkgs { inherit overlays system; }; in { devShells = { default = pkgs.mkShell { buildInputs = with pkgs; [ node2nix nodejs pnpm yarn ]; shellHook = '' echo "node `${pkgs.nodejs}/bin/node --version`" ''; }; }; }); }