From 8200e08b0b553983cae0d505c51494061a98f2c0 Mon Sep 17 00:00:00 2001
From: Jan Malakhovski <oxij@oxij.org>
Date: Mon, 1 Aug 2016 00:00:00 +0000
Subject: [PATCH] nixos: move nixosLabel to its own module

---
 nixos/modules/misc/label.nix   | 32 ++++++++++++++++++++++++++++++++
 nixos/modules/misc/version.nix |  9 ---------
 nixos/modules/module-list.nix  |  1 +
 3 files changed, 33 insertions(+), 9 deletions(-)
 create mode 100644 nixos/modules/misc/label.nix

diff --git a/nixos/modules/misc/label.nix b/nixos/modules/misc/label.nix
new file mode 100644
index 00000000000..30d8fc9952b
--- /dev/null
+++ b/nixos/modules/misc/label.nix
@@ -0,0 +1,32 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.system;
+in
+
+{
+
+  options.system = {
+
+    nixosLabel = mkOption {
+      type = types.str;
+      description = ''
+        NixOS version name to be used in the names of generated
+        outputs and boot labels.
+
+        If you ever wanted to influence the labels in your GRUB menu,
+        this is the option for you.
+      '';
+    };
+
+  };
+
+  config = {
+    # This is set here rather than up there so that changing it would
+    # not rebuild the manual
+    system.nixosLabel = mkDefault cfg.nixosVersion;
+  };
+
+}
diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index 48cde2ebbc8..83427d26fff 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -32,14 +32,6 @@ in
       '';
     };
 
-    nixosLabel = mkOption {
-      type = types.str;
-      description = ''
-        Label to be used in the names of generated outputs and boot
-        labels.
-      '';
-    };
-
     nixosVersion = mkOption {
       internal = true;
       type = types.str;
@@ -89,7 +81,6 @@ in
     system = {
       # These defaults are set here rather than up there so that
       # changing them would not rebuild the manual
-      nixosLabel   = mkDefault cfg.nixosVersion;
       nixosVersion = mkDefault (cfg.nixosRelease + cfg.nixosVersionSuffix);
       nixosRevision      = mkIf (pathIsDirectory gitRepo) (mkDefault            gitCommitId);
       nixosVersionSuffix = mkIf (pathIsDirectory gitRepo) (mkDefault (".git." + gitCommitId));
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 35f5e87d7e5..7fd71b0fe5e 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -60,6 +60,7 @@
   ./misc/extra-arguments.nix
   ./misc/ids.nix
   ./misc/lib.nix
+  ./misc/label.nix
   ./misc/locate.nix
   ./misc/meta.nix
   ./misc/nixpkgs.nix