timeline: crashes on file dialog

[fgaz]

re #162503, the timeline package crashes with

(.timeline-wrapped:2422797): GLib-GIO-ERROR **: 17:05:40.072: No GSettings schemas are installed on the system
Trace/breakpoint trap (core dumped)

when a file dialog is opened (eg. file -> open).

The rest of the program seems to work.

I tried adding wrapGAppsHook, gsettings-desktop-schemas, and glib, but none of those fixed it.

I'm running awesome wm, nixos 21.11

cc @davidak

[davidak]

Some resources i found related to the error message:

• https://stackoverflow.com/questions/28953925/glib-gio-error-no-gsettings-schemas-are-installed-on-the-system
• https://bbs.archlinux.org/viewtopic.php?id=249621
• GLib-GIO-ERROR: No GSettings schemas are installed on the system jeffreywildman/homebrew-virt-manager#168

timeline sources does not have schemas files.

maybe XDG_DATA_DIRS is not set correctly on your system

@jtojnar do you know how to fix this issue?

[jtojnar]

That might be a strictDeps issue (since it defaults to true for python3.pkgs.buildPythonPackage). See similar issue with https://nixos.org/manual/nixpkgs/stable/#ssec-gnome-hooks-gobject-introspection.

[fgaz]

maybe XDG_DATA_DIRS is not set correctly on your system

other gnome stuff seems to work though

[jtojnar]

You need to use wrapGAppsHook. Global XDG_DATA_DIRS intentionally will not contain schemas.

[fgaz]

I did try wrapGAppsHook, but that didn't fix it. maybe I did it wrong?

[jtojnar]

As mentioned above, for Python packages, you might also need to disable strictDeps.

[fgaz]

I tried using wrapGAppsHook and striceDeps = false, and it still errors out