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nixpkgs/nixos/modules/services/x11/unclutter.nix
Franz Pletz 1e95e114e5
nixos/xsession: use graphical systemd user target
While systemd suggests using the pre-defined graphical-session user
target, I found that this interface is difficult to use. Additionally,
no other major distribution, even in their unstable versions, currently
use this mechanism.

The window or desktop manager is supposed to run in a systemd user service
which activates graphical-session.target and the user services that are
binding to this target. The issue is that we can't elegantly pass the
xsession environment to the window manager session, in particular
whereas the PassEnvironment option does work for DISPLAY, it for some
mysterious reason won't for PATH.

This commit implements a new graphical user target that works just like
default.target. Services which should be run in a graphical session just
need to declare wantedBy graphical.target. The graphical target will be
activated in the xsession before executing the window or display manager.

Fixes #17858.
2017-05-29 15:05:28 +02:00

75 lines
2 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let cfg = config.services.unclutter;
in {
options.services.unclutter = {
enable = mkOption {
description = "Enable unclutter to hide your mouse cursor when inactive";
type = types.bool;
default = false;
};
package = mkOption {
type = types.package;
default = pkgs.unclutter;
defaultText = "pkgs.unclutter";
description = "unclutter derivation to use.";
};
keystroke = mkOption {
description = "Wait for a keystroke before hiding the cursor";
type = types.bool;
default = false;
};
timeout = mkOption {
description = "Number of seconds before the cursor is marked inactive";
type = types.int;
default = 1;
};
threeshold = mkOption {
description = "Minimum number of pixels considered cursor movement";
type = types.int;
default = 1;
};
excluded = mkOption {
description = "Names of windows where unclutter should not apply";
type = types.listOf types.str;
default = [];
example = [ "" ];
};
extraOptions = mkOption {
description = "More arguments to pass to the unclutter command";
type = types.listOf types.str;
default = [];
example = [ "noevent" "grab" ];
};
};
config = mkIf cfg.enable {
systemd.user.services.unclutter = {
description = "unclutter";
wantedBy = [ "graphical-session.target" ];
partOf = [ "graphical-session.target" ];
serviceConfig.ExecStart = ''
${cfg.package}/bin/unclutter \
-idle ${toString cfg.timeout} \
-jitter ${toString (cfg.threeshold - 1)} \
${optionalString cfg.keystroke "-keystroke"} \
${concatMapStrings (x: " -"+x) cfg.extraOptions} \
-not ${concatStringsSep " " cfg.excluded} \
'';
serviceConfig.PassEnvironment = "DISPLAY";
serviceConfig.RestartSec = 3;
serviceConfig.Restart = "always";
};
};
}