[BUG] Some or every QT apps will not open

[pinarruiz]

Context

Hi,

Until now i have been using bluskript/stylix from #142 as non of the QT apps had the stylix theme applied and this fork worked.

I saw that recently the 6bbae4f commit should fix the issue, but instead i am getting this error in what seems every QT app that I open:

QSystemTrayIcon::setVisible: No Icon set

Particularly Nextcloud and VLC, I dont know/think I have any others, but shows the error on both.

My stylix config:

{ pkgs, ... }: {
  stylix = {
    enable = true;
    polarity = "dark";
    image = pkgs.fetchurl {
      url = "https://...";
      sha256 = "...";
    };
  };
}

Versions

stylix: 0ef7003
nixpkgs: stable-24-05 (63d37cc)
Home Manager: release-24.05 (e1391fb)

Additional Context

$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.6.41, NixOS, 24.05 (Uakari), 24.05.20240721.63d37cc`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.5`
 - nixpkgs: `/nix/store/lzhqf5y9dcgfkg5f7f96jjc814pgrsqy-source`

Nextcloud client in Home Manager:

{ lib, ... }: {
  services.nextcloud-client = {
    enable = lib.mkDefault true;
    startInBackground = lib.mkDefault true;
  };
}

VLC was added as a system package:

{ pkgs, ... }: {
  environment.systemPackages = with pkgs; [
    ...
    vlc
    ...
  ];
}

Related: #367

If any extra context is required please let me know.

Thanks for the help in advance 😄.

[trueNAHO]

@Jackaed, do you maybe know how to resolve this?

[Jackaed]

No idea while I'm away from my computer, I think I tested VLC on my system so I'm surprised it isn't working. I'll have a look.

[Jackaed]

I can't reproduce this on unstable. Could you try a "more normal" Qt app (just for my information), e.g. dolphin or pcmanfm-qt?

[danth]

Does VLC use a system tray icon? (That's the ones that appear in the taskbar usually to show that an app is running in the background.) I know Nextcloud does and that seems to be what the error is hinting towards. Perhaps we have accidentally overwritten their icons somehow by installing the Breeze icons package?

[pinarruiz]

I can't reproduce this on unstable. Could you try a "more normal" Qt app (just for my information), e.g. dolphin or pcmanfm-qt?

Hi, @Jackaed

Will try later in the day, as I cannot do it now, and will give some feedback, the vlc version i am using is the one in stable-24-05 (63d37cc), but i have my config ready for allowing some unstable packages, I will let you know how that goes.

[pinarruiz]

Does VLC use a system tray icon? (That's the ones that appear in the taskbar usually to show that an app is running in the background.) I know Nextcloud does and that seems to be what the error is hinting towards. Perhaps we have accidentally overwritten their icons somehow by installing the Breeze icons package?

Hi, @danth

I don't know if VLC has a tray icon, i cant remember ever seeing one, that said, #142 seems to work, and i guess maybe the theme is the culprit as @Jackaed is suggesting (#487 (comment))

[pinarruiz]

Hi @Jackaed

Just checked with unstable vlc (versions seem to be the same) and i got the same result. The app appears not to launch and it gives the same error message:

QSystemTrayIcon::setVisible: No Icon set

[pinarruiz]

I am not sure #490 should close this issue, it will render it useless thats true, but disabling a feature that's not working should not be a reason to close an issue at least in my opinion, what do you think @trueNAHO ?

[trueNAHO]

I am not sure #490 should close this issue, it will render it useless thats true, but disabling a feature that's not working should not be a reason to close an issue at least in my opinion, what do you think @trueNAHO ?

Closing issues by reverting the commits introducing them is somewhat controversial.

IMHO, issues related to #490 should be closed to distinguish existing and non-existing problems. However, the issues closed by #490 will serve as references and considerations for #489.

[pinarruiz]

Makes sense to me, adding it to the related section at #489 looks good, so all good from my part closing the issue with #490 as its being referenced on the mentioned tracking issue.