sddm-astronaut: not working even with config

[penzboti]

Nixpkgs version

• Unstable (25.05)

Describe the bug

sddm-greeter-qt6 --test-mode comes up with the default sddm theme.

Steps to reproduce

My module for it looks like this:

{pkgs, ...}: let
  sddm-astronaut = pkgs.sddm-astronaut.override {
    # themeConfig = {
    #   AccentColor = "#746385";
    #   FormPosition = "left";
    #
    #   ForceHideCompletePassword = true;
    # };
  };
in {
  services.displayManager.sddm = {
    enable = true;
    package = pkgs.kdePackages.sddm; # qt6 sddm version

    theme = "sddm-astronaut-theme";
    extraPackages = [sddm-astronaut];

    wayland.enable = true;
  };

  environment.systemPackages = [sddm-astronaut];
}

Expected behaviour

the command should launch sddm with the astronaut theme

Screenshots

Relevant log output

[15:10:31.755] (II) GREETER: High-DPI autoscaling Enabled
[15:10:31.805] (II) GREETER: Reading from "/nix/store/p9y92bkkmdbxblx1ggsfrms9zpxj5bzs-desktops/share/wayland-sessions/hyprland-uwsm.desktop"
[15:10:31.806] (II) GREETER: Reading from "/nix/store/p9y92bkkmdbxblx1ggsfrms9zpxj5bzs-desktops/share/wayland-sessions/hyprland.desktop"
[15:10:31.808] (II) GREETER: Loading theme configuration from "qrc:/theme/theme.conf"
[15:10:31.822] (EE) GREETER: Socket error:  "QLocalSocket::connectToServer: Invalid name"
[15:10:32.027] (II) GREETER: Loading qrc:/theme/Main.qml...
[15:10:32.064] (WW) GREETER: file:///nix/store/333gi00v360rl36ns47n0fwq186gbyj0-sddm-unwrapped-0.21.0/lib/qt-6/qml/SddmComponents/LayoutBox.qml:35:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }
[15:10:32.064] (WW) GREETER: file:///nix/store/333gi00v360rl36ns47n0fwq186gbyj0-sddm-unwrapped-0.21.0/lib/qt-6/qml/SddmComponents/ComboBox.qml:105:9: QML Image: Cannot open: file:///nix/store/333gi00v360rl36ns47n0fwq186gbyj0-sddm-unwrapped-0.21.0/lib/qt-6/qml/SddmComponents/angle-down.png
[15:10:32.082] (WW) GREETER: file:///nix/store/333gi00v360rl36ns47n0fwq186gbyj0-sddm-unwrapped-0.21.0/lib/qt-6/qml/SddmComponents/ComboBox.qml:105:9: QML Image: Cannot open: file:///nix/store/333gi00v360rl36ns47n0fwq186gbyj0-sddm-unwrapped-0.21.0/lib/qt-6/qml/SddmComponents/angle-down.png
[15:10:32.121] (WW) GREETER: qrc:/theme/Main.qml:41:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }
[15:10:32.121] (II) GREETER: Adding view for "eDP-1" QRect(0,0 1366x768)
[15:10:33.879] (WW) GREETER: file:///nix/store/333gi00v360rl36ns47n0fwq186gbyj0-sddm-unwrapped-0.21.0/lib/qt-6/qml/SddmComponents/PictureBox.qml:106:13 Parameter "event" is not declared. Injection of parameters into signal handlers is deprecated. Use JavaScript functions with formal parameters instead.

Additional context

I followed an issue that was made a couple months back, but the package was recently updated.
All packages are on the unstable channel.
I am using flakes.

System metadata

• system: "x86_64-linux"
• host os: Linux 6.6.71, NixOS, 25.05 (Warbler), 25.05.20250116.5df4362
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.24.11
• channels(root): "home-manager, nixos, nixpkgs"
• nixpkgs: /nix/store/l9nb64iii15y0nr37qrs1cfm6rlpg6gh-source

Notify maintainers

@DaniD3v
@uxodb

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.

[penzboti]

after rebooting it works; not with the test-mode command, but on the login screen.