{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgsPinned.url = "github:nixos/nixpkgs/0c19708cf035f50d28eb4b2b8e7a79d4dc52f6bb";
  };

  outputs = { self, nixpkgs, flake-utils, nixpkgsPinned, ... }: flake-utils.lib.eachDefaultSystem (system:
    let
      pkgs = import nixpkgs {
        inherit system;
      };
      pkgsPinned = import nixpkgsPinned { inherit system; };
    in {
      devShell = pkgs.mkShell rec {
        buildInputs = [
          pkgs.python312
          pkgsPinned.ffmpeg_7
        ];
        #nativeBuildInputs = with pkgs; [
        #];
      };

      packages.default = pkgs.mkDerivation {};

      

    }
  );
}