On 2022-10-10 23:14, Stephen J. Turnbull wrote:
so I had to switch to a new provider. The new v-server is debian-based. the release is bullseye which does still provide ...
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... browse both the "venv" installation described in our docs at https://docs.mailman3.org/en/latest/install/virtualenv.html and Brian Carpenter's Debian installation guide at https://wiki.list.org/DOC/Howto_Install_Mailman3_On_Debian10. Then choose the guide you find more compatible with your thinking, and follow that.
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See also: "Installing Mailman3 on Debian 11": Tom Kisner -- Jul 9, 2022
https://kn6q.org/installing-mailman-3-on-debian-11
Kelly Close's guide "Mailman 3 Setup Using Ubuntu Bionic" works for Debian Bullseye.
https://docs.google.com/document/d/1xIcSsoNFp2nHi7r4eQys00s9a0k2sHhu1V5Plant...