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nixpkgs/nixos/modules/services/x11/desktop-managers/default.nix
Silvan Mosberger 374e6bcc40 treewide: Format all Nix files
Format all Nix files using the officially approved formatter,
making the CI check introduced in the previous commit succeed:

  nix-build ci -A fmt.check

This is the next step of the of the [implementation](https://github.com/NixOS/nixfmt/issues/153)
of the accepted [RFC 166](https://github.com/NixOS/rfcs/pull/166).

This commit will lead to merge conflicts for a number of PRs,
up to an estimated ~1100 (~33%) among the PRs with activity in the past 2
months, but that should be lower than what it would be without the previous
[partial treewide format](https://github.com/NixOS/nixpkgs/pull/322537).

Merge conflicts caused by this commit can now automatically be resolved while rebasing using the
[auto-rebase script](8616af08d9/maintainers/scripts/auto-rebase).

If you run into any problems regarding any of this, please reach out to the
[formatting team](https://nixos.org/community/teams/formatting/) by
pinging @NixOS/nix-formatting.
2025-04-01 20:10:43 +02:00

122 lines
3.4 KiB
Nix

{
config,
lib,
pkgs,
...
}:
let
inherit (lib) mkOption types;
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
./phosh.nix
./xfce.nix
./plasma5.nix
../../desktop-managers/plasma6.nix
./lumina.nix
./lxqt.nix
./enlightenment.nix
./gnome.nix
./retroarch.nix
./kodi.nix
./mate.nix
./pantheon.nix
./surf-display.nix
./cde.nix
./cinnamon.nix
./budgie.nix
./deepin.nix
../../desktop-managers/lomiri.nix
../../desktop-managers/cosmic.nix
];
options = {
services.xserver.desktopManager = {
wallpaper = {
mode = mkOption {
type = types.enum [
"center"
"fill"
"max"
"scale"
"tile"
];
default = "scale";
example = "fill";
description = ''
The file {file}`~/.background-image` is used as a background image.
This option specifies the placement of this image onto your desktop.
Possible values:
`center`: Center the image on the background. If it is too small, it will be surrounded by a black border.
`fill`: Like `scale`, but preserves aspect ratio by zooming the image until it fits. Either a horizontal or a vertical part of the image will be cut off.
`max`: Like `fill`, but scale the image to the maximum size that fits the screen with black borders on one side.
`scale`: Fit the file into the background without repeating it, cutting off stuff or using borders. But the aspect ratio is not preserved either.
`tile`: Tile (repeat) the image in case it is too small for the screen.
'';
};
combineScreens = mkOption {
type = types.bool;
default = false;
description = ''
When set to `true` the wallpaper will stretch across all screens.
When set to `false` the wallpaper is duplicated to all screens.
'';
};
};
session = mkOption {
internal = true;
default = [ ];
example = lib.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
`displayManager`.
'';
apply = map (
d:
d
// {
manage = "desktop";
start =
d.start
# literal newline to ensure d.start's last line is not appended to
+ lib.optionalString (needBGCond d) ''
if [ -e $HOME/.background-image ]; then
${pkgs.feh}/bin/feh --bg-${cfg.wallpaper.mode} ${lib.optionalString cfg.wallpaper.combineScreens "--no-xinerama"} $HOME/.background-image
fi
'';
}
);
};
};
};
config.services.xserver.displayManager.session = cfg.session;
}