b478e0043c removed every other instance of uwsgi.service and
httpd.service from Mailman before and requiredBy lists. This one
looks like it was just missed, since I can't see a reason to keep it
but remove the others.
Fixes: b478e0043c ("nixos/mailman: refactor")
Mailman can now work with MTAs other than Postfix. You'll have to configure
it yourself using the options in `services.mailman.settings.mta`.
This addition is reflected in the release notes for 21.03.
- Add serve.enable option, which configures uwsgi and nginx to serve
the mailman-web application;
- Configure services to log to the journal, where possible. Mailman
Core does not provide any options for this, but will now log to
/var/log/mailman;
- Use a unified python environment for all components, with an
extraPackages option to allow use of postgres support and similar;
- Configure mailman's postfix module such that it can generate the
domain and lmtp maps;
- Fix formatting for option examples;
- Provide a mailman-web user to run the uwsgi service by default
- Refactor Hyperkitty's periodic jobs to reduce repetition in the
expressions;
- Remove service dependencies not related to functionality included in
the module, such as httpd -- these should be configured in user config
when used;
- Move static files root to /var/lib/mailman-web-static by default. This avoids
permission issues when a static file web server attempts to access
/var/lib/mailman which is private to mailman. The location can still
be changed by setting services.mailman.webSettings.STATIC_ROOT;
- Remove the webRoot option, which seems to have been included by
accident, being an unsuitable directory for serving via HTTP.
- Rename mailman-web.service to mailman-web-setup.service, since it
doesn't actually serve mailman-web. There is now a
mailman-uwsgi.service if serve.enable is set to true.
Prior to this fix, changes to certain settings would not be applied
automatically and users would have to know to manually restart the
affected service. A prime example of this is
`services.mailman.hyperkitty.baseUrl`, or various things that affect
`mailman3/settings.py`
Previously, some files were copied into the Nixpkgs tree, which meant
we wouldn't easily be able to update them, and was also just messy.
The reason it was done that way before was so that a few NixOS
options could be substituted in. Some problems with doing it this way
were that the _package_ changed depending on the values of the
settings, which is pretty strange, and also that it only allowed those
few settings to be set.
In the new model, mailman-web is a usable package without needing to
override, and I've implemented the NixOS options in a much more
flexible way. NixOS' mailman-web config file first reads the
mailman-web settings to use as defaults, but then it loads another
configuration file generated from the new services.mailman.webSettings
option, so _any_ mailman-web Django setting can be customised by the
user, rather than just the three that were supported before. I've
kept the old options, but there might not really be any good reason to
keep them.
We already had python3Packages.mailman, but that's only really usable
as a library. The only other option was to create a whole Python
environment, which was undesirable to install as a system-wide
package.
It's likely that a user might want to set multiple values for
relay_domains, transport_maps, and local_recipient_maps, and the order
is significant. This means that there's no good way to set these
across multiple NixOS modules, and they should probably all be set
together in the user's Postfix configuration.
So, rather than setting these in the Mailman module, just make the
Mailman module check that the values it needs to occur somewhere, and
advise the user on what to set if not.
This replaces all Mailman secrets with ones that are generated the
first time the service is run. This replaces the hyperkittyApiKey
option, which would lead to a secret in the world-readable store.
Even worse were the secrets hard-coded into mailman-web, which are not
just world-readable, but identical for all users!
services.mailman.hyperkittyApiKey has been removed, and so can no
longer be used to determine whether to enable Hyperkitty. In its
place, there is a new option, services.mailman.hyperkitty.enable. For
consistency, services.mailman.hyperkittyBaseUrl has been renamed to
services.mailman.hyperkitty.baseUrl.
When mailman-web restarts, it removes the generated "static" directory. This
breaks a currently running httpd process, which needs a re-start, too, to
obtain a new handle for the newly generated path.
Any system uid will do, so we let the system allocate
one for us. The 'mailman' group is gone entirely since
we don't need it. Users who wish to run the 'mailman'
administration utility can do so via 'sudo':
$ sudo -u mailman mailman info
Also, simplify the syntax of our user.users entry to
rely on an attribute set rather than a list.
