需要 openSUSE Tumbleweed ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:languages:perl:CPAN-D/openSUSE_Tumbleweed/devel:languages:perl:CPAN-D.repo
zypper refresh
zypper install perl-Date-WeekOfYear
需要 15.6 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:languages:perl:CPAN-D/15.6/devel:languages:perl:CPAN-D.repo
zypper refresh
zypper install perl-Date-WeekOfYear
需要 15.5 ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:languages:perl:CPAN-D/15.5/devel:languages:perl:CPAN-D.repo
zypper refresh
zypper install perl-Date-WeekOfYear