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nixpkgs/nixos/modules/config/xdg/portal.nix
worldofpeace 64b4a24047 nixos/xdg/portal: set GTK_USE_PORTAL with lib.mkIf
If lib.optional is given a false value it will return an empty list.
Thusly the set-environment script can have

```
export GTK_USE_PORTAL=
```

This can rub certain bugs the wrong way #65679
so lets make sure this isn't set in the environment
at all.
2019-08-01 17:51:51 -04:00

59 lines
2 KiB
Nix

{ config, pkgs ,lib ,... }:
with lib;
{
options.xdg.portal = {
enable =
mkEnableOption "<link xlink:href='https://github.com/flatpak/xdg-desktop-portal'>xdg desktop integration</link>"//{
default = false;
};
extraPortals = mkOption {
type = types.listOf types.package;
default = [];
description = ''
List of additional portals to add to path. Portals allow interaction
with system, like choosing files or taking screenshots. At minimum,
a desktop portal implementation should be listed. GNOME and KDE already
adds <package>xdg-desktop-portal-gtk</package>; and
<package>xdg-desktop-portal-kde</package> respectively. On other desktop
environments you probably want to add them yourself.
'';
};
gtkUsePortal = mkOption {
type = types.bool;
default = false;
description = ''
Sets environment variable <literal>GTK_USE_PORTAL</literal> to <literal>1</literal>.
This is needed for packages ran outside Flatpak to respect and use XDG Desktop Portals.
For example, you'd need to set this for non-flatpak Firefox to use native filechoosers.
Defaults to <literal>false</literal> to respect its opt-in nature.
'';
};
};
config =
let
cfg = config.xdg.portal;
packages = [ pkgs.xdg-desktop-portal ] ++ cfg.extraPortals;
in mkIf cfg.enable {
assertions = [
{ assertion = (cfg.gtkUsePortal -> cfg.extraPortals != []);
message = "Setting xdg.portal.gtkUsePortal to true requires a portal implementation in xdg.portal.extraPortals such as xdg-desktop-portal-gtk or xdg-desktop-portal-kde.";
}
];
services.dbus.packages = packages;
systemd.packages = packages;
environment.variables = {
GTK_USE_PORTAL = mkIf cfg.gtkUsePortal "1";
XDG_DESKTOP_PORTAL_PATH = map (p: "${p}/share/xdg-desktop-portal/portals") cfg.extraPortals;
};
};
}