anchor.diff:        --replace "/usr/bin/file"     "${file}/bin/file"
     '';
   
  -  configureFlags = [ "--with-systemd-daemon" ]
  -    ++ [ "--enable-cli" ]
  +  configureFlags = [
  +      "--enable-cli"
  +    ]
  +    ++ optional enableSystemd "--with-systemd-daemon"
       ++ optional enableGTK3 "--with-gtk";
   
     preFixup = optionalString enableGTK3 /* gsettings schemas for file dialogues */ ''
  
positive.code: 
    buildInputs = [ pkgconfig intltool file openssl curl libevent inotify-tools zlib ]
      ++ optionals enableGTK3 [ gtk3 makeWrapper ]
      ++ optional stdenv.isLinux systemd;
  
    postPatch = ''
      substituteInPlace ./configure \
  
negative.code: { stdenv, fetchurl, pkgconfig, intltool, file, makeWrapper
  , openssl, curl, libevent, inotify-tools, systemd, zlib
  , enableGTK3 ? false, gtk3
  , enableSystemd ? stdenv.isLinux
  }:
  
  let
  