From d809a9e6b2e7cc249fe6134065ba8d119a69c73c Mon Sep 17 00:00:00 2001
From: aszlig <aszlig@redmoonstudios.org>
Date: Sun, 12 Aug 2012 07:15:56 +0200
Subject: [PATCH] mingetty: Option to not restart on service change.

This especially annoyed me whenver I was doing nixos-rebuild switch and getting
logged out on all consoles. With this there now is services.mingetty.dontRestart
for heavy VT users to deactivate this behaviour.
---
 modules/services/ttys/mingetty.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/modules/services/ttys/mingetty.nix b/modules/services/ttys/mingetty.nix
index e5dbc07aeb0f..23cdf861d168 100644
--- a/modules/services/ttys/mingetty.nix
+++ b/modules/services/ttys/mingetty.nix
@@ -46,6 +46,14 @@ with pkgs.lib;
         '';
       };
 
+      dontRestart = mkOption {
+        default = false;
+        description = ''
+          Don't restart mingetty processes as this will result in active
+          sessions to be logged out, for example on activation of the system's
+          configuration.
+        '';
+      };
     };
 
   };
@@ -69,6 +77,8 @@ with pkgs.lib;
 
       exec = "mingetty --loginprog=${pkgs.shadow}/bin/login --noclear ${tty}";
 
+      restartIfChanged = !config.services.mingetty.dontRestart;
+
       environment.LOCALE_ARCHIVE = "/run/current-system/sw/lib/locale/locale-archive";
 
     }) config.services.mingetty.ttys);