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nixpkgs/nixos/modules/config/xdg/icons.nix

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Nix

{ config, lib, pkgs, ... }:
with lib;
{
meta = {
maintainers = teams.freedesktop.members;
};
options = {
xdg.icons.enable = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
Whether to install files to support the
[XDG Icon Theme specification](https://specifications.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html).
'';
};
};
config = mkIf config.xdg.icons.enable {
environment.pathsToLink = [
"/share/icons"
"/share/pixmaps"
];
environment.systemPackages = [
# Empty icon theme that contains index.theme file describing directories
# where toolkits should look for icons installed by apps.
pkgs.hicolor-icon-theme
];
# libXcursor looks for cursors in XCURSOR_PATH
# it mostly follows the spec for icons
# See: https://www.x.org/releases/current/doc/man/man3/Xcursor.3.xhtml Themes
# These are preferred so they come first in the list
environment.sessionVariables.XCURSOR_PATH = [
"$HOME/.icons"
"$HOME/.local/share/icons"
];
environment.profileRelativeSessionVariables.XCURSOR_PATH = [
"/share/icons"
"/share/pixmaps"
];
};
}