flake.nix

{
  description = "A Nix-flake-based development environment";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

  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; overlays = [ self.overlays.default ]; };
      });
    in
    {
      overlays.default = final: prev: rec {
        nodejs = prev.nodejs;
        yarn = (prev.yarn.override { inherit nodejs; });
      };

      devShells = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.mkShell {
          venvDir = ".venv";
          packages = with pkgs; [
            python312
            python312Packages.pip
            python312Packages.poetry-core
            python312Packages.venvShellHook

            nodejs
            nodePackages.pnpm
            yarn
          ];
        };
      });
    };
}