29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
61 lines
1.3 KiB
Nix
61 lines
1.3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let cfg = config.services.xserver.multitouch; in
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{
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options = {
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services.xserver.multitouch = {
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enable = mkOption {
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default = false;
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example = true;
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description = "Whether to enable multitouch touchpad support.";
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};
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invertScroll = mkOption {
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default = false;
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example = true;
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type = types.bool;
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description = "Whether to invert scrolling direction à la OSX Lion";
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};
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ignorePalm = mkOption {
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default = false;
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example = true;
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type = types.bool;
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description = "Whether to ignore touches detected as being the palm (i.e when typing)";
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};
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};
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};
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config = mkIf cfg.enable {
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services.xserver.modules = [ pkgs.xf86_input_mtrack ];
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services.xserver.config =
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''
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# Automatically enable the multitouch driver
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Section "InputClass"
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MatchIsTouchpad "on"
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Identifier "Touchpads"
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Driver "mtrack"
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Option "IgnorePalm" "${if cfg.ignorePalm then "true" else "false"}"
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${optionalString cfg.invertScroll ''
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Option "ScrollUpButton" "5"
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Option "ScrollDownButton" "4"
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Option "ScrollLeftButton" "7"
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Option "ScrollRightButton" "6"
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''}
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EndSection
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'';
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};
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}
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