fix!: Run in lock mode as it is meant for initial generation

Author: akirak

pkgs/emacs/default.nix

@@ -234,7 +234,7 @@ in
     generateLockDir =
       (generateLockFiles {
         packageInputs =
-          excludeLocalPackages (enumerateConcretePackageSet "update" explicitPackages);
+          excludeLocalPackages (enumerateConcretePackageSet "lock" explicitPackages);
         flakeNix = true;
         archiveLock = true;
         headersJson = true;