852813689a
Use a solid black background when no background image (via ~/.background-image) is provided. In my case this fixes the really strange behaviour when i3 without a desktop manager starts with the SDDM login screen as background image.
89 lines
2.6 KiB
Nix
89 lines
2.6 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
xcfg = config.services.xserver;
|
|
cfg = xcfg.desktopManager;
|
|
|
|
# If desktop manager `d' isn't capable of setting a background and
|
|
# the xserver is enabled, `feh' or `xsetroot' are used as a fallback.
|
|
needBGCond = d: ! (d ? bgSupport && d.bgSupport) && xcfg.enable;
|
|
|
|
in
|
|
|
|
{
|
|
# Note: the order in which desktop manager modules are imported here
|
|
# determines the default: later modules (if enabled) are preferred.
|
|
# E.g., if Plasma 5 is enabled, it supersedes xterm.
|
|
imports = [
|
|
./none.nix ./xterm.nix ./xfce.nix ./plasma5.nix ./lumina.nix
|
|
./lxqt.nix ./enlightenment.nix ./gnome3.nix ./kodi.nix
|
|
];
|
|
|
|
options = {
|
|
|
|
services.xserver.desktopManager = {
|
|
|
|
session = mkOption {
|
|
internal = true;
|
|
default = [];
|
|
example = singleton
|
|
{ name = "kde";
|
|
bgSupport = true;
|
|
start = "...";
|
|
};
|
|
description = ''
|
|
Internal option used to add some common line to desktop manager
|
|
scripts before forwarding the value to the
|
|
<varname>displayManager</varname>.
|
|
'';
|
|
apply = list: {
|
|
list = map (d: d // {
|
|
manage = "desktop";
|
|
start = d.start
|
|
+ optionalString (needBGCond d) ''
|
|
if [ -e $HOME/.background-image ]; then
|
|
${pkgs.feh}/bin/feh --bg-scale $HOME/.background-image
|
|
else
|
|
# Use a solid black background as fallback
|
|
${pkgs.xorg.xsetroot}/bin/xsetroot -solid black
|
|
fi
|
|
'';
|
|
}) list;
|
|
needBGPackages = [] != filter needBGCond list;
|
|
};
|
|
};
|
|
|
|
default = mkOption {
|
|
type = types.str;
|
|
default = "";
|
|
example = "none";
|
|
description = "Default desktop manager loaded if none have been chosen.";
|
|
apply = defaultDM:
|
|
if defaultDM == "" && cfg.session.list != [] then
|
|
(head cfg.session.list).name
|
|
else if any (w: w.name == defaultDM) cfg.session.list then
|
|
defaultDM
|
|
else
|
|
throw ''
|
|
Default desktop manager (${defaultDM}) not found.
|
|
Probably you want to change
|
|
services.xserver.desktopManager.default = "${defaultDM}";
|
|
to one of
|
|
${concatMapStringsSep "\n " (w: "services.xserver.desktopManager.default = \"${w.name}\";") cfg.session.list}
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
};
|
|
|
|
config = {
|
|
services.xserver.displayManager.session = cfg.session.list;
|
|
environment.systemPackages =
|
|
mkIf cfg.session.needBGPackages [ pkgs.feh ]; # xsetroot via xserver.enable
|
|
};
|
|
}
|