google-cloud-cli : Google Cloud SDK ( https://cloud.google.com/sdk/ )
google-cloud-cli-gke-gcloud-auth-plugin : A kubectl authentication plugin for GKE ( https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a supertux88
For Paludis use this rsync : rsync://gentoo.zugaina.org/supertux88-portage
If you have a problem : ycarus(-at-)zugaina.org