Change lastModified to the number of seconds in the epoch

'lastModifiedDate' is now a string representing the equivalent
date/time.

1 files changed, 1 insertions, 1 deletions

diff --git a/flake.nix b/flake.nix
index f0e669f63..d954bd29d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,7 +13,7 @@
       versionSuffix =
         if officialRelease
         then ""
-        else "pre${builtins.substring 0 8 self.lastModified}_${self.shortRev or "dirty"}";
+        else "pre${builtins.substring 0 8 self.lastModifiedDate}_${self.shortRev or "dirty"}";
 
       officialRelease = false;