anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "clojure";
  -  version = "1.10.3.839";
  +  version = "1.10.3.849";
   
     src = fetchurl {
       # https://clojure.org/releases/tools
       url = "https://download.clojure.org/install/clojure-tools-${version}.tar.gz";
  -    sha256 = "sha256-nf8Vd60Opobj3gUPyYohQTzkG1G4kW9wWdBKRUba9+c=";
  +    sha256 = "sha256-0bHb6FsCZP1LdxY21+hz6lF+ka9N0yoIHUWVd+zc7wg=";
     };
   
     nativeBuildInputs = [
  
positive.code:     makeWrapper
    ];
  
    # See https://github.com/clojure/brew-install/blob/1.10.1/src/main/resources/clojure/install/linux-install.sh
    installPhase =
      let
        binPath = lib.makeBinPath [ rlwrap jdk ];
  
negative.code: 
        echo "Installing clojure and clj into $bin_dir"
        substituteInPlace clojure --replace PREFIX $out
        substituteInPlace clj --replace BINDIR $bin_dir
        install -Dm755 clojure "$bin_dir/clojure"
        install -Dm755 clj "$bin_dir/clj"
  
  