Radicale
Radicale is a Free and Open-Source CalDAV (calendars, todo-lists) and CardDAV (contacts) Server. For more information about Radicale itself, see https://radicale.org/
This basic configuration will run the server. Note that you might want to allow the port (5232 in this case) on you firewall
services.radicale = {
enable = true;
config = ''
[server]
# Bind all interfaces on port 5232
hosts = 0.0.0.0:5232
'';
};
The config is standard Radicale configuration, see https://radicale.org/configuration/
Authentication
The default authentication mode is None which just allows all usernames and passwords. Other option is to use an Apache htpasswd file for authentication.
services.radicale = {
enable = true;
config = ''
[server]
hosts = 0.0.0.0:5232
[auth]
type = htpasswd
htpasswd_filename = /path/to/htpasswd/file/radicale_users
# hash function used for passwords. May be `plain` if you don't want to hash the passwords
htpasswd_encryption = bcrypt
'';
};