anchor.diff:    configureFlags = [
       "--disable-debug"
       "--with-werror"
  -    "--disable-static-link"
  +    # Flag is not a boolean
  +    #"--disable-static-link"
       "--with-pythonpath"
       # Flag is not a boolean
       "--with-gtest-source=${googletest}/src/gtest"
  
positive.code:   };
  
    nativeBuildInputs = [
      perl
      bc
    ];
  
    buildInputs = [
  
negative.code: { stdenv
  , fetchurl
  , perl
  , bc
  , openssl
  