Restarting service doesn't run the latest service

[domenkozar]

Reproduce

Given arion container as:

    web = {
      service.useHostStore = true;
      service.depends_on = [ "hercules-server" ];
      service.ports = [
        "8088:80"
      ];
      nixos.useSystemd = true;
      nixos.configuration = {
        imports = [ ../../web/module.nix ];
        services.hercules-web = {
          domain = envConfig.domain;
          backend = apiInternalURL;
        };
      };
    };

When there's a change in the closure of the nixos system,
arion restart web will rebuild all the changes, but they won't be in effect which is confusing.

Workaround

arion up -d --always-recreate-deps web will recreate the image.

[domenkozar]

Maybe service.useHostNixDaemon should be set to true as well?

[roberth]

service.useHostNixDaemon is only relevant if you want to run nix-build inside the container. I don't think that applies here.

[roberth]

It's a Docker Compose footgun we've inherited.

If you make changes to your docker-compose.yml configuration these changes are not reflected after running this command.

The "correct" command seems to be up -d

[roberth]

This does seem to indicate that we only need to evaluate the composition - not build it.