nixos-configs/modules/greetd/default.nix

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{
ags,
config,
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lib,
pkgs,
...
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}: let
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inherit (lib) optionals readFile;
inherit (config.vars) mainUser greetdDupe mainMonitor;
# Nix stuff
isNvidia = config.hardware.nvidia.modesetting.enable;
isTouchscreen = config.hardware.sensor.iio.enable;
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hyprland = config.home-manager.users.${mainUser}.wayland.windowManager.hyprland.finalPackage;
# Show Regreet on all monitors
dupeMonitors = pkgs.writeShellApplication {
name = "dupeMonitors";
runtimeInputs = [hyprland pkgs.jq];
text = ''
main="${mainMonitor}"
names="($(hyprctl -j monitors | jq -r '.[] .description'))"
if [[ "$main" == "null" ]]; then
main="''${names[0]}"
fi
for (( i=0; i<''${#names[@]}; i++ )); do
# shellcheck disable=SC2001
name=$(echo "''${names[$i]}" | sed 's/.*(\(.*\))/\1/')
# shellcheck disable=SC2001
desc=$(echo "''${names[$i]}" | sed 's/ (.*//')
if [[ "$name" != "$main" && "desc:$desc" != "$main" ]]; then
hyprctl keyword monitor "$name",preferred,auto,1,mirror,"$main"
fi
done
'';
};
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# Check if user wants the greeter only on main monitor
setupMonitors =
if (mainMonitor != "null" && !greetdDupe)
then "hyprctl dispatch focusmonitor ${mainMonitor}"
else "dupeMonitors";
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# Setup Hyprland as the greeter's compositor
hyprConf =
pkgs.writeText "greetd-hypr-config"
(lib.strings.concatStrings ((optionals isNvidia [
"env = LIBVA_DRIVER_NAME,nvidia\n"
"env = XDG_SESSION_TYPE,wayland\n"
"env = GBM_BACKEND,nvidia-drm\n"
"env = __GLX_VENDOR_LIBRARY_NAME,nvidia\n"
"env = WLR_NO_HARDWARE_CURSORS,1\n"
])
++ [
"exec-once = ${setupMonitors} && sleep 0.5 &&"
# FIXME: doesn't start
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" swww init --no-cache &&"
" swww img -t none ${pkgs.dracula-theme}/wallpapers/waves.png\n"
"${readFile ./hyprland.conf}\n"
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"exec-once = ags -b greeter &> /tmp/ags.log; hyprctl dispatch exit"
]));
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in {
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# Add home folder for home-manager to work
users.users.greeter = {
home = "/var/lib/greeter";
createHome = true;
};
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home-manager.users.greeter = {
imports = [
ags.homeManagerModules.default
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../../common/vars
../../home/theme.nix
];
programs.ags.enable = true;
home = {
packages = [
hyprland
dupeMonitors
pkgs.bun
pkgs.sassc
pkgs.swww
pkgs.gtk3
pkgs.glib
];
file = {
".config/ags" = {
source = ../ags/config;
recursive = true;
};
".config/ags/config.js".text =
/*
javascript
*/
''
import { transpileTypeScript } from './js/utils.js';
export default (await transpileTypeScript('greeter')).default;
'';
};
};
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vars = config.vars;
home.stateVersion = "24.05";
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};
services = {
xserver = {
displayManager = {
sessionPackages = [hyprland];
};
libinput.enable = true;
wacom.enable = isTouchscreen;
};
greetd = {
enable = true;
settings = {
default_session = {
command = "Hyprland --config ${hyprConf}";
user = "greeter";
};
initial_session = {
command = "Hyprland";
user = mainUser;
};
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};
};
};
# unlock GPG keyring on login
services.gnome.gnome-keyring.enable = true;
security.pam.services.greetd.enableGnomeKeyring = true;
}