anchor.diff:        #/^\s*#.*/d
         #/^\s*$/d
       ' < src/EDITME > Local/Makefile
  +
  +    runHook postConfigure
     '';
   
     installPhase = ''
  +    runHook preInstall
  +
       mkdir -p $out/bin $out/share/man/man8
       cp doc/exim.8 $out/share/man/man8
   
  
positive.code:       for i in mailq newaliases rmail rsmtp runq sendmail; do
          ln -s exim $i
        done )
    '';
  
    meta = with lib; {
  
negative.code:     ++ lib.optional enableDMARC opendmarc
      ++ lib.optional enableRedis hiredis;
  
    configurePhase = ''
      runHook preConfigure
  
      sed '
        s:^\(BIN_DIRECTORY\)=.*:\1='"$out"'/bin:
        s:^\(CONFIGURE_FILE\)=.*:\1=/etc/exim.conf:
  