Debian Stretch repository

Seems like it’s available:

apt-cache policy percona-xtradb-cluster-57

percona-xtradb-cluster-57:
Installé : (aucun)
Candidat : 5.7.19-29.22-1.stretch
Table de version :
5.7.19-29.22-1.stretch 500
500 [url]http://repo.percona.com/apt[/url] stretch/main amd64 Packages