flake.nix

{
  inputs = {
    nixpkgs = {
      url = "github:nixos/nixpkgs/nixpkgs-unstable";
    };
  };

  outputs = {
    self,
    nixpkgs,
  }: let
    # Helper generating outputs for each desired system
    forAllSystems = nixpkgs.lib.genAttrs [
      "x86_64-darwin"
      "x86_64-linux"
      "aarch64-darwin"
      "aarch64-linux"
    ];

    # Import nixpkgs' package set for each system.
    nixpkgsFor = forAllSystems (system:
      import nixpkgs {
        inherit system;
      });
  in {
    formatter = forAllSystems (system: nixpkgsFor.${system}.alejandra);

    devShells = forAllSystems (system: {
      default = nixpkgsFor.${system}.mkShell {
        buildInputs = with nixpkgsFor.${system}; [
          nodejs-16_x
          nodePackages.pnpm
        ];
      };
    });
  };
}