nix/module/common/Keyd.nix

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{ pkgs, lib, key, ... }: {
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environment.systemPackages = with pkgs; [ keyd ];
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services.keyd = {
enable = true;
keyboards.default = {
ids = [ "*" ];
settings = {
main = {
backspace = "delete"; # Delete key on backspace.
capslock = "overload(control, esc)"; # Ctrl/esc combo.
compose = "layer(layer_macro)"; # Input macros.
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esc = "${key.sysctrl}"; # System controls.
leftcontrol = "overload(layer_alternative, leftcontrol)"; # Alternative layer for home, end etc.
rightcontrol = "layer(layer_control)"; # Media and other controls.
rightshift = "backspace"; # Backspace.
};
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# Alternative navigation.
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layer_alternative = {
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w = "pageup";
a = "home";
s = "pagedown";
d = "end";
x = "cut";
c = "copy";
v = "paste";
h = "left";
j = "down";
k = "up";
l = "right";
# space = "macro2(1, 100, macro(space))"; # NOTE: Possible bhop example. Use in per-application, not here.
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};
# Media controls.
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layer_control = {
space = "playpause";
w = "volumeup";
s = "volumedown";
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d = "forward";
a = "back";
e = "nextsong";
q = "previoussong";
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x = "mute";
z = "stopcd";
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};
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layer_macro = {};
};
};
};
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# HACK: Workaround for https://github.com/NixOS/nixpkgs/issues/290161
users.groups.keyd = {};
systemd.services.keyd.serviceConfig.CapabilityBoundingSet = [ "CAP_SETGID" ];
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# Debug toggle just in case I need it again.
# systemd.services.keyd.environment.KEYD_DEBUG = "1";
}