ddclient wont start with DynamicUser

[cawilliamson]

Issue description

When ddclient is configured normally it refuses to start due to permission issues. I've traced this back to the use of DynamicUser in the systemd config.

Steps to reproduce

1.) Setup ddclient with some sane settings
2.) nixos-rebuild upgrade
3.) You will see: WARNING: file /run/ddclient/ddclient.conf: Cannot open file '/run/ddclient/ddclient.conf'. (Permission denied)

The workaround I've found is to use: systemd.services.ddclient.serviceConfig.DynamicUser = lib.mkForce false;

Technical details

these paths will be fetched (0.05 MiB download, 0.28 MiB unpacked):
  /nix/store/1hmvnxp69a6x27cw0c9c8jnhjfcssbxh-bash-interactive-4.4-p23-dev
copying path '/nix/store/1hmvnxp69a6x27cw0c9c8jnhjfcssbxh-bash-interactive-4.4-p23-dev' from 'https://cache.nixos.org'...
 - system: `"x86_64-linux"`
 - host os: `Linux 4.18.17, NixOS, 19.03pre158246.6141939d6e0 (Koi)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.1.3`
 - channels(root): `"nixos-19.03pre158246.6141939d6e0"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos

[aanderse]

@arianvp is this fixed for 19.03?

[arianvp]

It should be! @cawilliamson could you confirm?

[bjornfor]

It works now, so closing.

It outputs this though:

WARNING:  file /run/ddclient/ddclient.conf: file /run/ddclient/ddclient.conf must be accessible only by its owner.