anchor.diff:        for i in mailq newaliases rmail rsmtp runq sendmail; do
           ln -s exim $i
         done )
  +
  +    runHook postInstall
     '';
   
     meta = with lib; {
  
positive.code:     ++ lib.optional enableDMARC opendmarc
      ++ lib.optional enableRedis hiredis;
  
    preBuild = ''
      sed '
        s:^\(BIN_DIRECTORY\)=.*:\1='"$out"'/bin:
        s:^\(CONFIGURE_FILE\)=.*:\1=/etc/exim.conf:
  
negative.code:       #/^\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
  
  