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Add screen lock and idle management to ringtail

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Configure swayidle + swaylock for automatic screen locking after 15
minutes of inactivity and display power-off after 60 minutes. Swaylock
uses Catppuccin Macchiato theme to match the existing Sway config.
Also adds Mod4+l keybinding for manual lock and disables system
suspend/hibernate entirely.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Erich Blume 2026-02-19 06:41:57 -08:00
commit 9beb6dc055
2 changed files with 61 additions and 0 deletions
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1
docs/changelog.d/feature-ringtail-screen-lock.feature.md Normal file
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@ -0,0 +1 @@
Add screen lock, idle timeout, and sleep prevention to ringtail: swaylock locks after 15min, display powers off after 60min, machine never suspends.

60
nixos/ringtail/configuration.nix
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@ -53,6 +53,7 @@ in
];
};
security.polkit.enable = true;
security.pam.services.swaylock = {}; # Allow swaylock to authenticate
security.sudo.wheelNeedsPassword = false;
# Enable greetd as display manager for sway
@ -261,6 +262,7 @@ in
"${mod}+d" = "exec wmenu-run";
"${mod}+space" = "exec fuzzel";
"${mod}+Shift+c" = "reload";
"${mod}+l" = "exec swaylock -f";
"--locked XF86AudioMute" = "exec pactl set-sink-mute @DEFAULT_SINK@ toggle";
"--locked XF86AudioLowerVolume" = "exec pactl set-sink-volume @DEFAULT_SINK@ -5%";
"--locked XF86AudioRaiseVolume" = "exec pactl set-sink-volume @DEFAULT_SINK@ +5%";
@ -273,6 +275,56 @@ in
};
};
programs.swaylock = {
enable = true;
settings = {
color = "24273a";
font = "VictorMono Nerd Font";
font-size = 24;
indicator-radius = 100;
indicator-thickness = 7;
inside-color = "24273a";
inside-clear-color = "24273a";
inside-ver-color = "24273a";
inside-wrong-color = "24273a";
key-hl-color = "8aadf4";
bs-hl-color = "ed8796";
ring-color = "363a4f";
ring-clear-color = "f5a97f";
ring-ver-color = "8aadf4";
ring-wrong-color = "ed8796";
line-color = "00000000";
line-clear-color = "00000000";
line-ver-color = "00000000";
line-wrong-color = "00000000";
separator-color = "00000000";
text-color = "cad3f5";
text-clear-color = "cad3f5";
text-ver-color = "cad3f5";
text-wrong-color = "ed8796";
show-failed-attempts = true;
};
};
services.swayidle = {
enable = true;
events = [
{ event = "before-sleep"; command = "${pkgs.swaylock}/bin/swaylock -f"; }
{ event = "lock"; command = "${pkgs.swaylock}/bin/swaylock -f"; }
];
timeouts = [
{
timeout = 900; # 15 minutes — lock screen
command = "${pkgs.swaylock}/bin/swaylock -f";
}
{
timeout = 3600; # 60 minutes — turn off display
command = "${pkgs.sway}/bin/swaymsg 'output * dpms off'";
resumeCommand = "${pkgs.sway}/bin/swaymsg 'output * dpms on'";
}
];
};
programs.fuzzel = {
enable = true;
settings = {
@ -419,6 +471,14 @@ in
# Allow the runner's dynamic user to access the nix daemon
nix.settings.trusted-users = [ "gitea-runner" ];
# Prevent machine from sleeping (workstation should stay on)
systemd.sleep.extraConfig = ''
AllowSuspend=no
AllowHibernation=no
AllowHybridSleep=no
AllowSuspendThenHibernate=no
'';
# NixOS release
system.stateVersion = "25.11";
}