$ perldoc cpan |grep -i force -C2
        and CPAN version.

    -f  Force the specified action, when it normally would have failed. Use
        this to install a module even if its tests fail. When you use this
        option, -i is not optional for installing a module when you need to
        force it:

                % cpan -f -i Module::Foo
--
            cpan -i Netscape::Booksmarks Business::ISBN

            # force install modules ( must use -i )
            cpan -fi CGI::Minimal URI

--

CREDITS
    Japheth Cleaver added the bits to allow a forced install (-f).

    Jim Brandt suggest and provided the initial implementation for the