From 52f872ec27fa9bcbcc33f7d97ac4416386316f8f Mon Sep 17 00:00:00 2001
From: Ollie Charles <ollie@ocharles.org.uk>
Date: Mon, 23 Nov 2015 14:45:26 +0000
Subject: [PATCH] services.xserver: Disable Ctrl+Alt+Backspace by default
Ctrl+Alt+Backspace is usually enabled by default under X, and is a
keyboard shortcut that forcefully kills the current X server. This can
lead to data loss by users if accidentally pressed. This commit
introduces a new option, services.xserver.enableCtrlAltBackspace, that
is *disabled* by default. If set to true, the previous behavior can be
restored.
A similar decision was made by the Ubuntu team, and is documented here:
https://wiki.ubuntu.com/XorgCtrlAltBackspace
---
nixos/modules/services/x11/xserver.nix | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/nixos/modules/services/x11/xserver.nix b/nixos/modules/services/x11/xserver.nix
index 3348e8d0582c..fd862232e07f 100644
--- a/nixos/modules/services/x11/xserver.nix
+++ b/nixos/modules/services/x11/xserver.nix
@@ -409,6 +409,16 @@ in
if possible.
'';
};
+
+ enableCtrlAltBackspace = mkOption {
+ type = types.bool;
+ default = false;
+ description = ''
+ Whether to enable the DontZap option, which binds Ctrl+Alt+Backspace
+ to forcefully kill X. This can lead to data loss and is disabled
+ by default.
+ '';
+ };
};
};
@@ -533,6 +543,7 @@ in
''
Section "ServerFlags"
Option "AllowMouseOpenFail" "on"
+ Option "DontZap" "${if cfg.enableCtrlAltBackspace then "off" else "on"}"
${cfg.serverFlagsSection}
EndSection