From 9d3da3a3bfef8d356cedc0ea546d7fe0ca907c64 Mon Sep 17 00:00:00 2001
From: Geoffrey Reedy <geoff@programmer-monk.net>
Date: Sun, 6 Sep 2015 00:43:57 -0600
Subject: [PATCH] nixos i18n: add option to set console keymap from xkb

Close #9675. The expression was refactored heavily by vcunat.
---
 nixos/modules/config/i18n.nix | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/nixos/modules/config/i18n.nix b/nixos/modules/config/i18n.nix
index 3622b21626b..f58e540a6e5 100644
--- a/nixos/modules/config/i18n.nix
+++ b/nixos/modules/config/i18n.nix
@@ -52,6 +52,15 @@ in
         '';
       };
 
+      consoleUseXkbConfig = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          If set, configure the console keymap from the xserver keyboard
+          settings.
+        '';
+      };
+
       consoleKeyMap = mkOption {
         type = mkOptionType {
           name = "string or path";
@@ -74,6 +83,13 @@ in
 
   config = {
 
+    i18n.consoleKeyMap = with config.services.xserver;
+      mkIf config.i18n.consoleUseXkbConfig
+        (pkgs.runCommand "xkb-console-keymap" { preferLocalBuild = true; } ''
+          '${pkgs.ckbcomp}/bin/ckbcomp' -model '${xkbModel}' -layout '${layout}' \
+            -option '${xkbOptions}' -variant '${xkbVariant}' > "$out"
+        '');
+
     environment.systemPackages =
       optional (config.i18n.supportedLocales != []) glibcLocales;