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-rw-r--r--lib/trivial.nix9
-rw-r--r--nixos/modules/misc/version.nix6
2 files changed, 7 insertions, 8 deletions
diff --git a/lib/trivial.nix b/lib/trivial.nix
index a928e1dbca98..a6a4abba1189 100644
--- a/lib/trivial.nix
+++ b/lib/trivial.nix
@@ -58,11 +58,12 @@ rec {
 
   inherit (lib.strings) fileContents;
 
+  version = fileContents ../.version;
+  suffix = let suffixFile = ../.version-suffix; in
+    if pathExists suffixFile then fileContents suffixFile else "pre-git";
+
   # Return the Nixpkgs version number.
-  nixpkgsVersion =
-    let suffixFile = ../.version-suffix; in
-    fileContents ../.version
-    + (if pathExists suffixFile then fileContents suffixFile else "pre-git");
+  nixpkgsVersion = version + suffix;
 
   # Whether we're being called by nix-shell.
   inNixShell = builtins.getEnv "IN_NIX_SHELL" != "";
diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index b8f0a223c910..d9d60b725093 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -5,8 +5,6 @@ with lib;
 let
   cfg = config.system.nixos;
 
-  releaseFile  = "${toString pkgs.path}/.version";
-  suffixFile   = "${toString pkgs.path}/.version-suffix";
   revisionFile = "${toString pkgs.path}/.git-revision";
   gitRepo      = "${toString pkgs.path}/.git";
   gitCommitId  = lib.substring 0 7 (commitIdFromGitRepo gitRepo);
@@ -25,14 +23,14 @@ in
     nixos.release = mkOption {
       readOnly = true;
       type = types.str;
-      default = fileContents releaseFile;
+      default = trivial.version;
       description = "The NixOS release (e.g. <literal>16.03</literal>).";
     };
 
     nixos.versionSuffix = mkOption {
       internal = true;
       type = types.str;
-      default = if pathExists suffixFile then fileContents suffixFile else "pre-git";
+      default = trivial.suffix;
       description = "The NixOS version suffix (e.g. <literal>1160.f2d4ee1</literal>).";
     };