display the git SHA for the nixos version in MOTD

1 files changed, 1 insertions, 1 deletions

diff --git a/flake.nix b/flake.nix
index ec2f077..f6a9b91 100644
--- a/flake.nix
+++ b/flake.nix
@@ -155,7 +155,7 @@
           };
           modules = [
             {
-              system.configurationRevision = nixpkgs.lib.mkIf (self ? rev) self.rev;
+              system.configurationRevision = self.rev or self.dirtyRev or null;
               system.nixos.versionSuffix = nixpkgs.lib.mkForce "git.${builtins.substring 0 11 nixpkgs.rev}";
               nixpkgs.pkgs = pkgs;
               environment.systemPackages = [ pkgs.git ];