use LWP::Simple qw(get);

BEGIN {
  push @INC, sub {
    shift;
    my $file = shift; # eg "Foo/Bar.pm"
    my $content = get("http://myrepository.com/modules/$file");
    if ($content) {
      open(my $fh, "<", \$content);
      return $fh;
    }
    else {
      return;
    }
  }
}