{ 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";
  #};

  manyfoldImage = pkgs.dockerTools.pullImage {
      imageName = "ghcr.io/manyfold3d/manyfold-solo";                                                        
      imageDigest = "sha256:465399a2d296034ef84dba18a13744b567694c652387bd17fe97d51c672d1fa9";               
      hash = "sha256-j7YSUGRFUDh6FJ1CrIQEzGU/0B8uPO8y1kd9lYLad4w=";                                          
      finalImageName = "ghcr.io/manyfold3d/manyfold-solo";                                                   
      finalImageTag = "latest";                         
  };

  ## generate the reproducable blob below via:
  ## $ nix-shell -p nix-prefetch-github --command 'nix-prefetch-github assimp assimp --rev e778c84cd62bc8b38d8e491ad3d2c27cb8ed37d5'
  #assimpSrc = pkgs.fetchFromGitHub {
  #    "owner" = "assimp";
  #    "repo"  = "assimp";
  #    "rev"   = "e778c84cd62bc8b38d8e491ad3d2c27cb8ed37d5";
  #    "hash"  = "sha256-ja5pFwpnzLT2MDIR8ISwC6+eA5UXyqRZW2CMCCrF1Q0=";
  #};
  #myAssimp = pkgs.pkgsStatic.assimp.overrideAttrs (oldAttrs: {
  #  inherit assimpSrc; # Set the source to the fetched commit
  #  src = assimpSrc;
  #});


in
rec
{

  xrforgeImage = pkgs.dockerTools.buildImage {

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

    # add nix pkgs + local files
    copyToRoot = pkgs.buildEnv {
      name = "image-root";
      pathsToLink = ["/manyfold" "/bin" ];
      paths = [
        #pkgs.pkgsStatic.rsync
        pkgs.rsync
        pkgs.sqlite
        pkgs.rclone
        pkgs.fuse3
        #pkgs.acl            # getfacl e.g.
        #pkgs.inotify-tools  # inotifywait e.g.
        pkgs.zip             # inotifywait e.g.
        pkgs.assimp
        ##pkgs.ts            # job management 
        #myAssimp            # updated build of assimp
        ../.
      ];
    };

    config = {
      Cmd = ["/init"];
      # We substitute the /init entrypoing with our own wrapper 
      EntryPoint = ["/manyfold/cli/manyfold.sh" "boot"];
      Env = [
        "LD_PRELOAD=" # unset LD_PRELOAD (some package is setting it a nonexisting lib)
      ];
    };
  };

}