anchor.diff:  
     client = fetchurl {
       url = "https://raw.githubusercontent.com/scalacenter/nailgun/${nailgunCommit}/pynailgun/ng.py";
  -    sha256 = "0qjw4nsyb4cxg96jj1yv5c0ivcxvmscxxqfzll5w9p1pjb30bq0n";
  +    sha256 = "0z4as5ibmzkd145wsch9caiy4037bgg780gcf7pyns0cv9n955b4";
     };
   
     zshCompletion = fetchurl {
       url = "https://raw.githubusercontent.com/scalacenter/bloop/v${version}/etc/zsh/_bloop";
  -    sha256 = "1id6f1fgy2rk0q5aad6ffivhbxa94fallzsc04l9n0y1s2xdhqpm";
  +    sha256 = "09qq5888vaqlqan2jbs2qajz2c3ff13zj8r0x2pcxsqmvlqr02hp";
     };
   
     installPhase = ''
  
positive.code: 
  let
    baseName = "bloop";
    version = "1.2.5";
    deps = stdenv.mkDerivation {
      name = "${baseName}-deps-${version}";
      buildCommand = ''
  
negative.code:     '';
      outputHashMode = "recursive";
      outputHashAlgo = "sha256";
      outputHash     = "1npq02npk6qiwghgr3bqd1ala1kv8hwq1qkmyffvigcq7frkz4r8";
    };
  in
  stdenv.mkDerivation rec {
    name = "${baseName}-${version}";
  
    # Fetched from https://github.com/scalacenter/bloop/releases/download/v${version}/install.py
    nailgunCommit = "9327a60a";
  
    buildInputs = [ jdk makeWrapper deps ];
  
  