The package golang-github-spf13-cobra 0.0~git20170731.0.b26b538-2 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-spf13-cobra -- More information about golang-github-spf13-cobra: http://pkg.kali.org/pkg/golang-github-spf13-cobra
