GVim built against GTK 3 can't find icons

[8573]

Issue description

When I start a version of GVim from vim_configurable built against GTK 3, as is the default as of commit 9ac7ec7, I get the following message:

(gvim:16055): Gtk-WARNING **: 23:26:45.710: Could not find the icon 'document-open-ltr'. The 'hicolor' theme
was not found either, perhaps you need to install it.
You can get a copy from:
        http://icon-theme.freedesktop.org/releases

Versions of GVim from vim_configurable built against GTK 2 do not give me this message.

Steps to reproduce

$ nix-build -E '(import <nixpkgs> {}).vim_configurable.override {guiSupport = "gtk3";}'
$ ./result/bin/gvim

For comparison:

$ nix-build -E '(import <nixpkgs> {}).vim_configurable.override {guiSupport = "gtk2";}'
$ ./result/bin/gvim

Technical details

• system: "x86_64-linux"
• host os: Linux 4.14.48, NixOS, 18.09pre147850.2428f5dda13 (Jellyfish)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.0.4
• channels(root): "nixos-18.09pre147850.2428f5dda13"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

[jtojnar]

Do you have any icon theme installed? gtk2 had stock icons built-in, whereas gtk3 requires an icon theme. Also, wrapGAppsHook should be added to gtk3 variant’s dependencies, since it is required for things like file chooser dialogues.

[8573]

I don't know what it would mean (in terms of NixOS options) to install an icon theme, so I doubt I have installed one.

[jtojnar]

Just add something like gnome3.adwaita-icon-theme to environment.systemPackages. Desktop environments should do that for you.

[8573]

While I'm unfamiliar with GVim's dialogues, I see that adding wrapGAppsHook to its nativeBuildInputs does allow it to display a file-chooser dialogue; however, for me, opening this file-chooser dialogue produces many of the following warnings:

(gvim:21398): dconf-WARNING **: 20:08:07.668: failed to commit changes to dconf: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name ca.desrt.dconf was not provided by any .service files

---

Adding gnome3.adwaita-icon-theme to environment.systemPackages indeed does fix the warning from my initial report (thanks!). Should the NixOS manual suggest, as it currently does not, installing such an icon theme if one doesn't install a desktop environment?

Even with the adwaita-icon-theme installed, opening GVim's find/replace dialogue produces the following warning, which I suppose indicates some further GNOME package I'm missing:

(gvim:21404): Gtk-WARNING **: 20:28:51.298: Could not load a pixbuf from /org/gtk/libgtk/theme/Adwaita/assets/bullet-symbolic.svg.
This may indicate that pixbuf loaders or the mime database could not be found.

[jtojnar]

however, for me, opening this file-chooser dialogue produces many of the following warnings:

Yes, adding gnome3.dconf to services.dbus.packages is another thing you need to do if you build your DE yourself.

Should the NixOS manual suggest, as it currently does not, installing such an icon theme if one doesn't install a desktop environment?

I was contemplating a section on creating custom DEs. In addition to icons and dconf, it could suggest things like polkit, udisks or other things you will see in a full DE. Or maybe this could go to wiki – if I recall correctly, some of the errors from above are already listed there.

Even with the adwaita-icon-theme installed, opening GVim's find/replace dialogue produces the following warning, which I suppose indicates some further GNOME package I'm missing:

Yup, that would be librsvg gdk_pixbuf loader. You could fix it like this:

nixpkgs/nixos/modules/services/x11/desktop-managers/xfce.nix

Line 109 in 5e21b90

GDK_PIXBUF_MODULE_FILE = "${pkgs.librsvg.out}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache";

Though I would expect wrapGAppsHook to take care of that.

[8573]

Yes, adding gnome3.dconf to services.dbus.packages is another thing you need to do [...]

I've done so, and also set programs.dconf.enable = true, and rebooted, and the file-chooser dialogue now works without warnings. Thanks.

Would it make sense for programs.dconf itself to add gnome3.dconf to services.dbus.packages?

Or maybe this could go to wiki – if I recall correctly, some of the errors from above are already listed there.

Is there a wiki still? I thought it was shut down.

Though I would expect wrapGAppsHook to take care of that.

Ah, indeed it does; I had forgotten to test that.

[jtojnar]

Would it make sense for programs.dconf itself to add gnome3.dconf to services.dbus.packages?

Yes, I am not sure why it already is not there.

Is there a wiki still? I thought it was shut down.

Yup, we had a new one for a while now: https://nixos.wiki/