nixos/distccd: enabling the `zeroconf` option causes the service to fail

[arximboldi]

Nixpkgs version

• Stable (24.11)

Describe the bug

When enabling zeroconf = true, the some avahi permission error comes out.

Steps to reproduce

Add this to configuration.nix and switch.

  services.distccd = {
    enable = true;
    zeroconf = true;
}

Expected behaviour

The service is enabled and the zeroconf feature works.

Screenshots

No response

Relevant log output

× distccd.service - Distributed C, C++ and Objective-C compiler
     Loaded: loaded (/etc/systemd/system/distccd.service; enabled; preset: ignored)
     Active: failed (Result: exit-code) since Fri 2025-02-21 00:28:59 CET; 196ms ago
   Duration: 90ms
 Invocation: 775d32919f9e4275acd3d3f6fe291b20
       Docs: man:distccd(1)
    Process: 70015 ExecStart=/nix/store/1l78cr7nif7qj2daph47i3n1rivydnks-start-distccd (code=exited, status=134)
   Main PID: 70015 (code=exited, status=134)
         IP: 0B in, 0B out
         IO: 0B read, 0B written
   Mem peak: 1.5M
        CPU: 10ms

Feb 21 00:28:59 ce1 systemd[1]: Started Distributed C, C++ and Objective-C compiler.
Feb 21 00:28:59 ce1 distccd[70016]: (register_stuff) CRITICAL! Failed to create entry group: Not permitted
Feb 21 00:28:59 ce1 1l78cr7nif7qj2daph47i3n1rivydnks-start-distccd[70016]: distccd: thread-watch.c:165: avahi_threaded_poll_quit: Assertion `pthread_equal(pthread_self(), p->thread_id)' failed.
Feb 21 00:28:59 ce1 1l78cr7nif7qj2daph47i3n1rivydnks-start-distccd[70015]: /nix/store/1l78cr7nif7qj2daph47i3n1rivydnks-start-distccd: line 15: 70016 Aborted                 (core dumped) /nix/store/vkkb1qqgah3ghls63rqs397kxvbz0yf7-distcc-2021-03-11/bin/distccd --no-detach --daemon --enable-tcp-insecure --port 3632 --log-level warning --zeroconf --allow 10.0.0.0/8 --allow 192.168.0.0/16 --allow 172.16.0.0/12 --allow 127.0.0.0/8
Feb 21 00:28:59 ce1 systemd[1]: distccd.service: Main process exited, code=exited, status=134/n/a
Feb 21 00:28:59 ce1 systemd[1]: distccd.service: Failed with result 'exit-code'.

Additional context

No response

System metadata

• system: "x86_64-linux"
• host os: Linux 6.6.74, NixOS, 24.11 (Vicuna), 24.11.714033.f6687779bf4c
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.24.12
• channels(root): "nixos-24.11, nixos-18.03-18.03, nixos-18.09-18.09, nixos-19.03-19.03, nixos-19.09-19.09, nixos-20.03-20.03, nixos-20.09-20.09, nixos-21.11-21.11, nixos-22.05-22.05, nixos-22.11-22.11, nixos-23.05-23.05, nixos-23.11-23.11, nixos-24.05-24.05, nixos-24.11-24.11, nixos-unstable"
• channels(raskolnikov): "nixgl, nixpkgs"
• nixpkgs: /home/raskolnikov/.nix-defexpr/channels/nixpkgs

Notify maintainers

@anderspapitto

---

Note for maintainers: Please tag this issue in your pull request description. (i.e. Resolves #ISSUE.)

I assert that this issue is relevant for Nixpkgs

• I assert that this is a bug and not a support request.
• I assert that this is not a duplicate of an existing issue.
• I assert that I have read the NixOS Code of Conduct and agree to abide by it.

Is this issue important to you?

Add a 👍 reaction to issues you find important.

[arximboldi]

Found a workaround:

  services.avahi.enable = true;
  services.avahi.publish.enable = true;
  services.avahi.publish.userServices = true;

Should these options be enabled automatically when zeroconf = true? Or otherwise maybe a reference be added in the docs?

[arximboldi]

I just noticed that the workaround seems not enough, this is what I am getting in the logs:

Feb 21 11:15:29 ce2 systemd[1]: Started Distributed C, C++ and Objective-C compiler.
Feb 21 11:15:29 ce2 ayiy85aq8yrp3005xprpswp95m6vc50x-start-distccd[7866]: sh: line 1: cc: command not found
Feb 21 11:15:29 ce2 distccd[7865]: (read_string_from_popen) CRITICAL! Failed to read string from C compiler.
Feb 21 11:15:29 ce2 ayiy85aq8yrp3005xprpswp95m6vc50x-start-distccd[7869]: sh: line 1: cc: command not found
Feb 21 11:15:29 ce2 distccd[7865]: (read_string_from_popen) CRITICAL! Failed to read string from C compiler.
Feb 21 11:15:29 ce2 distccd[7865]: (register_stuff) Warning: Failed to determine CC version, not registering DNS-SD service subtype!

I have tried adding this but it doesn't seem to be enough:

  systemd.services.distccd.path = [pkgs.stdenv.cc];

However this worked:

    systemd.services.distccd.environment.DISTCCD_PATH = builtins.concatStringsSep ":" ["${pkgs.gcc}/bin"];