anchor.diff:  , syslog ? false
   , moreheaders ? false
   , echo ? false
  -, ngx_lua ? false }:
  +, ngx_lua ? false
  +, set_misc ? false
  +}:
   
   with stdenv.lib;
   
  
positive.code:     ++ optional moreheaders "--add-module=${moreheaders-ext}"
      ++ optional echo "--add-module=${echo-ext}"
      ++ optional ngx_lua "--add-module=${develkit-ext} --add-module=${lua-ext}"
      ++ optional (elem stdenv.system (with platforms; linux ++ freebsd)) "--with-file-aio";
  
  
  
negative.code:     sha256 = "0r07q1n3nvi7m3l8zk7nfk0z9kjhqknav61ys9lshh2ylsmz1lf4";
    };
  
    set-misc-ext = fetchFromGitHub {
      owner = "openresty";
      repo = "set-misc-nginx-module";
      rev = "v0.27";
      sha256 = "1bd1isacsiay73nc2jlp0wky32l42a3sjskvfa1082l12g0p1x39";
    };
  
  in
  
  stdenv.mkDerivation rec {
  