The package golang-github-go-openapi-strfmt 0.21.1-1 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-go-openapi-strfmt -- More information about golang-github-go-openapi-strfmt: http://pkg.kali.org/pkg/golang-github-go-openapi-strfmt