{ inputs.nixpkgs.url = "github:NixOS/nixpkgs?rev=e4ad989506ec7d71f7302cc3067abd82730a4beb"; outputs = { self, nixpkgs, }: let supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"]; forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f { pkgs = import nixpkgs {inherit system;}; }); in { devShells = forEachSupportedSystem ({pkgs}: { default = pkgs.mkShell { buildInputs = with pkgs; [nim nimble-unwrapped nimlsp]; }; }); }; }