anchor.diff:      libxi
       libxinerama
       libxrandr
  -  ] ++ [
  -    openssl_1-0-2
     ];
   
     installPhase = ''
  
positive.code: , libxi
  , libxinerama
  , libxrandr
  , openssl_1-0-2
  
  , channel
  , type ? "alpha"
  
negative.code:       sha256_headless = "1041ef61ea4aecd1f425e6030a909f0c349a9c01d1b3324d84a61b1cfef5ba6c";
      };
      "0.16" = {
        version = "0.16.18";
        sha256_alpha = "3df665b88773093ed9eb91590b3eb9c70e79eaf986bb8bfe34d01d0a52071ca6";
        sha256_headless = "a3ca99ae869a468ab58fe3c15db51b9d26ef135f2f433dc994f28660485c4990";
      };
    };
    source = sources."${channel}";
  