Looking at the reverse-depends in main for python3-keyring:
$ reverse-depends -c main python3-keyring Reverse-Depends * python3-keystoneclient * python3-launchpadlib * python3-novaclient * python3-openstackclient
keystoneclient has optional support for keyring (so could demote Depends->Suggests), novaclient and openstackclient have dropped support for keyring.
python3-launchpadlib does require use of keyring still.
Looking at the reverse-depends in main for python3-keyring:
$ reverse-depends -c main python3-keyring keystoneclient launchpadlib openstackclient
Reverse-Depends
* python3-
* python3-
* python3-novaclient
* python3-
keystoneclient has optional support for keyring (so could demote Depends->Suggests), novaclient and openstackclient have dropped support for keyring.
python3- launchpadlib does require use of keyring still.