perl-DateTime-Format-W3CDTF from openSUSE:Backports:SLE-15-SP3 project
選擇您的作業系統
加套件庫並手動安裝
需要 step ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Backports:SLE-15-SP3/step/openSUSE:Backports:SLE-15-SP3.repo zypper refresh zypper install perl-DateTime-Format-W3CDTF
需要 standard ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Backports:SLE-15-SP3/standard/openSUSE:Backports:SLE-15-SP3.repo zypper refresh zypper install perl-DateTime-Format-W3CDTF