repl:
  nix repl --expr "\
    let \
      flake = builtins.getFlake \"$(git rev-parse --show-toplevel)\"; in \
    flake // (with flake; { \
      lib = inputs.nixpkgs.lib; \
      pkgs = inputs.nixpkgs.legacyPackages."\${builtins.currentSystem}".extend(import ./pkgs inputs); \
    }) \
  "