{ pkgs ? import <nixpkgs> { }
  , pkgsLinux ? import <nixpkgs> { system = "x86_64-linux"; } 
}:

let

# -- swap the above pkgs with the pkgs definition below for 100% reproducability
# -- WARNING: requires quite some diskspace 

#{ } :
#
#let 
#  pkgs = import ( builtins.fetchTarball {
#    # https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-25.05.zip
#    name = "nixos-25.05";
#    url  = "https://github.com/NixOS/nixpkgs/archive/nixos-25.05.tar.gz";
#    sha256 = "sha256:10cqhkqkifcgyibj9nwxrnq424crfl40kwr3daky83m2fisb4f6p";
#  }) {};

  vars = import ./vars.nix;

  # generate the reproducable blob below via:
  # $ nix-shell -p nix-prefetch-docker --run 'nix-prefetch-docker ghcr.io/manyfold3d/manyfold-solo 0.120.0'

  manyfoldImage = pkgs.dockerTools.pullImage {
      imageName = "ghcr.io/manyfold3d/manyfold-solo";
      imageDigest = "sha256:6250e562a05bf9476ddcfdc897a7b03cbf2090c727d9fe051afde486579b54a6";
      sha256 = "sha256-V5y1N0l4JQjVDQbboGYX15MQaImXtP/HpNwPjDtxeJQ=";
      finalImageName = "ghcr.io/manyfold3d/manyfold-solo";
      finalImageTag = "0.121.0";
  };

in
rec
{

  xrforgeImage = pkgs.dockerTools.buildImage {

    name = "xrforge";
    tag = "latest";
    created = "now";
    fromImage = manyfoldImage;

    # add nix pkgs + local files
    contents = pkgs.buildEnv {
      name = "image-root";
      pathsToLink = ["/manyfold" "/bin" ];
      paths = [
        pkgs.pkgsStatic.rsync
        pkgs.pkgsStatic.sqlite
        pkgs.pkgsStatic.rclone
        pkgs.pkgsStatic.fuse3
        pkgs.pkgsStatic.acl           # getfacl e.g.
        pkgs.pkgsStatic.inotify-tools # inotifywait e.g.
        pkgs.pkgsStatic.zip           # inotifywait e.g.
        pkgs.pkgsStatic.ts            # job management 
        pkgs.pkgsStatic.assimp        # cli 3D editing/conversion 
        ./..
      ];
    };

    config = {
      Cmd = ["/init"];
      # We substitute the /init entrypoing with our own wrapper 
      EntryPoint = ["/manyfold/cli/manyfold.sh" "boot"];
    };
  };

}