Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:perl:CPAN-M/openSUSE_Tumbleweed/devel:languages:perl:CPAN-M.repo
zypper refresh
zypper install perl-Math-Vec
Para 15.5 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:perl:CPAN-M/15.5/devel:languages:perl:CPAN-M.repo
zypper refresh
zypper install perl-Math-Vec
Para 15.4 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:perl:CPAN-M/15.4/devel:languages:perl:CPAN-M.repo
zypper refresh
zypper install perl-Math-Vec