nixos/version: remove nixpkgs commit rev from initrd

This avoids unnecessary initrd rebuilds when nothing in the initrd would
have changed aside from the nixpkgs revision.

1 files changed, 1 insertions, 1 deletions

diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index 780a6b2a83a..0f55ab8a09c 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -32,7 +32,7 @@ let
     VARIANT_ID = cfg.variant_id;
   };
 
-  initrdReleaseContents = osReleaseContents // {
+  initrdReleaseContents = (removeAttrs osReleaseContents [ "BUILD_ID" ]) // {
     PRETTY_NAME = "${osReleaseContents.PRETTY_NAME} (Initrd)";
   };
   initrdRelease = pkgs.writeText "initrd-release" (attrsToText initrdReleaseContents);