fix: add dependencies to nix flake (solves #257 & solves #259)

[faretek1]

motivation

• It wasn't building on my system because it was outdated. See nix dependencies #257 and nix rust version #259
• To use for deployment e.g. gstest
• For making a goboscript 'pop-up' nix development shell

considerations

• it may be a good idea to make and use a rust-toolchain.toml file for this and other stuff. afaik, It's like .python-version but for rust
• I'm not very good at nix so this may be bad
• It seems like default.nix is called by external flakes, but there is a lot of setup in flake.nix. Is there a way to simplify this in a proper way?

Here is a nix flake you can use to open a shell with goboscript installed. It will cache so it only builds goboscript once

{
  description = "Goboscript development environment";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    rust-overlay.url = "github:oxalica/rust-overlay";
    goboscript.url = "github:faretek1/goboscript?ref=9145b8330c092f15d4a11b728c28979e7b08a5bc";
  };

  outputs = inputs@{ self, nixpkgs, flake-utils, rust-overlay, goboscript, ... }:
  flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-darwin" ] (system: let
    overlays = [ (import rust-overlay) ];
    pkgs = import nixpkgs {
      inherit system overlays;
    };
    rust = pkgs.rust-bin.selectLatestNightlyWith (toolchain: toolchain.default);
  in rec {

    devShell = pkgs.mkShell {
      buildInputs = with pkgs; [ ];
      packages = [ 
        (import goboscript
        {
          inherit (pkgs) lib rustPlatform pkg-config openssl;
          inherit rust;
        })
      ];
      nativeBuildInputs = [ rust ];
    };
  });
}

[faretek1]

I'm not sure if this line is important, so i changed it to the more conventional import nixpkgs { inherit system};