anchor.diff:    cargoDeps = rustPlatform.fetchCargoTarball {
       inherit src;
       name = "${pname}-${version}";
  -    hash = "sha256-Fn4M4CQV7VTE7SubvOszhpGBbmDyqemyUeZ0qDmcGUU=";
  +    hash = "sha256-t1/xztmiuJMqNkIe7cBzO7MaZQb6GtnIX5wxEpC+IFo=";
     };
   
     nativeBuildInputs = [
  
positive.code: , openssl
  , perl
  , pkg-config
  , rustPlatform
  , sqlcipher
  , sqlite
  
negative.code:     cargoCheckHook
    ];
  
    passthru.tests = {
      python = python3.pkgs.deltachat;
    };
  
    meta = with lib; {
      description = "Delta Chat Rust Core library";
      homepage = "https://github.com/deltachat/deltachat-core-rust/";
  