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-rw-r--r--nixos/modules/misc/version.nix5
1 files changed, 3 insertions, 2 deletions
diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index ddbd3963cc5..8a85035ceb7 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -6,6 +6,7 @@ let
   cfg = config.system.nixos;
 
   gitRepo      = "${toString pkgs.path}/.git";
+  gitRepoValid = lib.pathIsGitRepo gitRepo;
   gitCommitId  = lib.substring 0 7 (commitIdFromGitRepo gitRepo);
 in
 
@@ -91,8 +92,8 @@ in
       # These defaults are set here rather than up there so that
       # changing them would not rebuild the manual
       version = mkDefault (cfg.release + cfg.versionSuffix);
-      revision      = mkIf (pathExists gitRepo) (mkDefault            gitCommitId);
-      versionSuffix = mkIf (pathExists gitRepo) (mkDefault (".git." + gitCommitId));
+      revision      = mkIf gitRepoValid (mkDefault            gitCommitId);
+      versionSuffix = mkIf gitRepoValid (mkDefault (".git." + gitCommitId));
     };
 
     # Generate /etc/os-release.  See