Add infrastructure for contacts and calendars

[teto]

This also adds the modules

• programs.vdirsyncer,
• programs.khal, and
• services.vdirsyncer

that integrate with the new infrastructure.

Co-authored-by: Andrew Scott 3648487+ayyjayess@users.noreply.github.com
Co-authored-by: Sebastian Zivota sebastian.zivota@mailbox.org

Description

This is a rebased version of the longstanding PR ( > 3 years ?) made to add contact and calendar support.
I've commented out "locale" support for khal since it was causing issues.

With it in its current state I was able to configure vdirsyncer and khal.
My proposition is to merge this wiht all its faults otherwise we can still wait 4 years before having anything working.
We have 6 months before release to iron things out and until then we make it clear that the module is experimental.

Checklist

• Change is backwards compatible.

• Code formatted with ./format.

• Code tested through nix-shell --pure tests -A run.all or nix develop --ignore-environment .#all using Flakes.

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[ncfavier]

What about #3912?

[teto]

#3912 is nowhere close to this old contact branch. This is much better as it generates the config for you.

[teto]

also just in case you are not on the chat, I actually asked on matrix before merging. To sum up it's not perfect but let's merge and make it as good as the mail infra #2335 (comment)

[DanielSiepmann]

Is there a way to exclude the new WIP modules in my local setup?
I already have a working vdirsync module for myself. This now conflicts with the new upstream provided by this PR.
And I can't migrate to upstream, due to still incomplete accounts modules.

That's why I would like to exclude the upstream vdirsync until its done.

[ncfavier]

disabledModules = [ "programs/vdirsyncer.nix" ]; should do it, at the same level as imports, config, options...

See https://nixos.org/manual/nixos/unstable/#sec-replace-modules

[teto]

@DanielSiepmann how does your module compare ? anything we could merge ?

And I can't migrate to upstream, due to still incomplete accounts modules.

what part do you miss, especially compared to yours ? Note that I messed up when merging. Does #4087 fix your situation ?

[DanielSiepmann]

@teto I'm so newby that my module doesn't compare at all. I just did some small hacks: https://git.daniel-siepmann.de/danielsiepmann/nixpkgs/src/branch/main/home/modules/programs/vdirsyncer.nix (module) and https://git.daniel-siepmann.de/danielsiepmann/nixpkgs/src/branch/main/home/programs/vdirsyncer.nix (config).

Thanks @ncfavier. My own module has the same name, so I need to rename things or would disable my own as well? Renaming removes the need to disable the module anyway.

[ncfavier]

disabledModules is supposed to look for relative paths in modulesPath, which is <home-manager/modules>, so your module should be left alone.

[teto]

you might be better off renaming your module, so you can try both.

[DanielSiepmann]

@teto

Does #4087 fix your situation ?
I guess yes, as I end up in error: The option accounts.calendar' does not exist. Definition values`, will give it a try (later) and see whether I can migrate to the upstream :) And will provide feedback if I miss anything.

@ncfavier Thanks, it indeed works.

[Janik-Haag]

@teto do you mind sharing your config I can't get it running in the current state ^^

my current config is this but the accounts module dosn't create a config for vdirsyncer.

{ ... }:
{
  services.vdirsyncer.enable = true;
  accounts.contact.basePath = ".con";
  accounts.calendar.basePath = ".cal";
  accounts.calendar.accounts.nerdberg = {
    khal = {
      enable = true;
      color = null;
      readOnly = true;
      type = "calendar";
    };
    local.type = "filesystem";
    local.fileExt = ".ics";
    name = "Nerdberg";
    remote = {
      type = "http";
      url = "https://kalender.nerdberg.de/events.ics";
    };
    vdirsyncer = {
      enable = true;
      collections = null;
      conflictResolution = "remote wins";
    };
  };
}

[Janik-Haag]

also on another note: we have some stuff that is using local and other stuff locale which seems like it should be called the same every where, and I think there is a copy paste error:

[teto]

@Janik-Haag I would recommand first crafting a working configuration manually and once you have it working convert it to home-manager format so you can spot what is missing. My config is here https://github.com/teto/home/blob/main/hm/profiles/vdirsyncer.nix .

could you point in the code the typo ? I am not sure if you refer to locale as in LANG or LC_MONETARY variables

[nixos-discourse]

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/can-home-manager-install-unstable-and-stable-programs-modules-not-just-pkgs/42919/13