feat(common): set system.configurationRevision

1 files changed, 7 insertions, 0 deletions

diff --git a/nixos/rebuild b/nixos/rebuild
index 395f78d..3589dc4 100755
--- a/nixos/rebuild
+++ b/nixos/rebuild
@@ -9,6 +9,13 @@ if [ ! -d "$hostDir" ]; then
   exit 1
 fi
 
+# Make the configuration repository's commit available to the NixOS module.
+export NIXOS_CONFIG_REVISION
+NIXOS_CONFIG_REVISION=$(git -C "$top" rev-parse --verify HEAD)
+if [[ -n $(git -C "$top" status --porcelain) ]]; then
+  NIXOS_CONFIG_REVISION+="-dirty"
+fi
+
 (
   # The result symlink created in the current directory is registered as a root of the Nix
   # garbage collector, so it's important that we call nixos-rebuild from the host directory.