multiple EOFs try

use v6;
loop {
    my $s = $*IN.Supply;
    if $*IN.eof {
        say 'eat eof';
        $*IN.read(1)
    }
    react {
        whenever $s -> $buf {
            print $buf;
            LAST {
                say 'got eof';
            }
        }
    }
}