anchor.diff:  # build time
   , autoconf
   , cargo
  +, dump_syms
   , makeWrapper
   , nodejs
   , perl
  
positive.code:   nativeBuildInputs = [
      autoconf
      cargo
      llvmPackages.llvm # llvm-objdump
      makeWrapper
      nodejs
  
negative.code:   # tests were disabled in configureFlags
    doCheck = false;
  
    # Generate build symbols once after the final build
    # https://firefox-source-docs.mozilla.org/crash-reporting/uploading_symbol.html
    preInstall = ''
      ./mach buildsymbols
      mkdir -p $symbols/
      cp mozobj/dist/*.crashreporter-symbols.zip $symbols/
  
      cd mozobj
    '';
  
  