Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: facter 0 -> 1
attrpath: facter
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/2yz64pr9sbwgaapwykbphwyys1w22nyf-packages.json.drv
building '/nix/store/2yz64pr9sbwgaapwykbphwyys1w22nyf-packages.json.drv'...

Going to be running update for following packages:
 - facter-4.10.0

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - facter-4.10.0: UPDATING ...
 - facter-4.10.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/fa/facter/Gemfile.lock b/pkgs/by-name/fa/facter/Gemfile.lock
index 1af6d837a747..4412e2a5a65a 100644
--- a/pkgs/by-name/fa/facter/Gemfile.lock
+++ b/pkgs/by-name/fa/facter/Gemfile.lock
@@ -14,4 +14,4 @@ DEPENDENCIES
   facter
 
 BUNDLED WITH
-   2.5.16
+   2.7.2

Package version did not change.