wip: service ordering with nimi

[eljamm]

No description provided.

[imincik]

We need to review and merge ngi-nix/nimi#3 to get this working.

[eljamm]

We need to review and merge ngi-nix/nimi#3 to get this working.

I'm testing this against a local copy with that PR checked out. Doesn't seem to be working, but maybe I'm doing something wrong.

[eljamm]

Added an afterReady option with a readyCheck in ngi-nix/nimi@f578468, which allows services to only start after another has finished setting up:

{
  services = {
    components = {
      python-web = {
        command = pkgs.mypkgs.python-web;
        readyCheck = pkgs.writeShellScript "check-web-ready" ''
          curl -sf http://localhost:5000
        '';
      };

      python-web-hello = {
        command = pkgs.hello;
      };
    };

    ordering.python-web-hello.after = [ "python-web" ];
    ordering.python-web-hello.afterReady = [ "python-web" ];
  };
}

$ podman run --rm -it localhost/python-web-app:latest
[2026-04-22T11:06:51Z INFO  nimi::cli] Launching process manager...
[2026-04-22T11:06:51Z INFO  nimi::process_manager] Starting process manager...
[2026-04-22T11:06:51Z INFO  python-web] Running readiness check (/nix/store/idsr00gd8x52lnwqlbdjwi1ghx68gbsh-check-web-ready)
[2026-04-22T11:06:51Z DEBUG python-web]  * Serving Flask app 'python_web.app'
[2026-04-22T11:06:51Z DEBUG python-web]  * Debug mode: off
[2026-04-22T11:06:51Z ERROR python-web] WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
[2026-04-22T11:06:51Z ERROR python-web]  * Running on all addresses (0.0.0.0)
[2026-04-22T11:06:51Z ERROR python-web]  * Running on http://127.0.0.1:5000
[2026-04-22T11:06:51Z ERROR python-web]  * Running on http://192.168.1.100:5000
[2026-04-22T11:06:51Z ERROR python-web] Press CTRL+C to quit
[2026-04-22T11:06:54Z ERROR python-web] 127.0.0.1 - - [22/Apr/2026 11:06:54] "GET / HTTP/1.1" 200 -
[2026-04-22T11:06:54Z DEBUG python-web-hello] Hello, world!

[github-actions]

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[imincik]

@eljamm , would you please create Nimi PR to https://github.com/ngi-nix/nimi ?

[eljamm]

@eljamm , would you please create Nimi PR to ngi-nix/nimi ?

Created ngi-nix/nimi#6

[eljamm]

No longer relevant.