anchor.diff:    cargoDeps = rustPlatform.fetchCargoTarball {
       inherit src;
       name = "${pname}-${version}";
  -    hash = "sha256-MiSGJMXe8vouv4XEHXq274FHEvBMtd7IX6DyNJIWYeU=";
  +    hash = "sha256-BHjb2mtB7b2KhQtdlLwDPg7plkS3uYku7AfxRExQhfs=";
     };
   
     nativeBuildInputs = [
  
positive.code: , perl
  , pkg-config
  , rustPlatform
  , sqlite
  , fixDarwinDylibNames
  , CoreFoundation
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "libdeltachat";
    version = "1.71.0";
  
    src = fetchFromGitHub {
      owner = "deltachat";
      repo = "deltachat-core-rust";
      rev = version;
      hash = "sha256-zpjg7R6/fmDfvFTsooak3B+gwbCadwxiQfbKREqEXY8=";
    };
  
    patches = [
  