Feature request. More options to the default.nix

[relief-melone]

Hey,

i am still pretty new to the contributing part of NixOS and the derivations. I am trying to create a nix vimPlugin for vscode-js-debug. I have stumbled over various buildInputs missing. In the readme I saw how to override it for specific packages. I was wondering if it would be a viable option to have something like additionalBuildInputs as well as additionalNativeBuildInputs added to the default.nix which would be inherited to the node-env.nix file. So something like this

default.nix

{pkgs ? import <nixpkgs> {
  inherit system;
}, system ? builtins.currentSystem, 
  nodejs ? pkgs."nodejs_18"
  additionalBuildInputs ? []
  additionalNativeBuildInputs * []
}:

let
nodeEnv = import ./node-env.nix {
  inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
  inherit pkgs nodejs additionalBuildInputs additonalNativeBuildInputs;
  libtool = if pkgs.stdenv.isDarwin then pkgs.cctools or pkgs.darwin.cctools else null;
};

#...

node-env.nix

#...
stdenv.mkDerivation ({
      name = "node-shell-${name}${if version == null then "" else "-${version}"}";
      
      nativeBuildInputs = [] ++ additionalNativeBuildInputs;
      buildInputs = [ python nodejs ] ++ lib.optional (stdenv.isLinux) utillinux ++ buildInputs ++ additionalBuildInputs;
#...

There might have been some good reasons for not doing this but if not I think it would make it more accessible to tailor the build process for the end user of node2nix. In any case the project is a great contribution. Thanks for the effort put into this