GSConnect does not work with GDM

[cyplo]

Issue description

Hi !
When using gnome extension gsconnect (both from 19.03 and unstable) it does not work when launched under Gnome3 session that was launched from GDM - both X and Wayland sessions have this problem.
It works when Gnome is launched from LightDM.

Steps to reproduce

• install gnomeExtensions.gsconnect
• set

services = {
      desktopManager = {
        gnome3.enable = true;
      };
      displayManager.gdm= {
        enable = true;
        wayland = false;
      };
};

• Observe:
  • gsconnect is available from the tray menu, however clicking mobile devices -> mobile settings does not open any window.
  • Previously configured devices are not visible in the menu either

Only log entry concerning gsconnect I was able to find is:

Apr 19 23:44:22 skinnyv .gnome-shell-wr[1727]: JS ERROR: GSConnect: Gio.DBusError: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.Shell.Extensions.GSConnect was not provided by any .service files
                                               _settings/<@/etc/profiles/per-user/cyryl/share/gnome-shell/extensions/gsconnect@andyholmes.github.io/extension.js:226:21

Technical details

• system: "x86_64-linux"
• host os: Linux 4.19.35, NixOS, 19.03.172286.8ea36d73256 (Koi)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.2.2
• channels(cyryl): ""
• channels(root): "nixos-19.03.172286.8ea36d73256"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

Happy to help debugging here but not sure where to start. Thanks !

[jtojnar]

Works fine here. The extension requires a systemd service. Did you install it using environment.systemPackages? Though, I do not see why not doing that would still work under LightDM.

[cyplo]

Interesting ! Thank you for getting back to me :)
Moving the package to environment.systemPackages fixed the issue - thank you for that !

To summarize, gnomeExtensions.gsconnect in

• user packages with GDM - does not work
• user packages with LightDM - does work
• system packages with GDM - does work

Would you like to leave this issue open or close it ?
Is there a piece of documentation stating that this package needs to be in system packages that I missed - or would we need to add it someplace ? thanks !

[jtojnar]

Maybe the package list could show an installation method when package contains systemd/dbus services. And nix-env could show a warning.

[bjornfor]

Would you like to leave this issue open or close it ?

I think it's better if this issue gets closed and new ones get opened for follow-up issues.