datadumper 0 -> 1
attrpath: datadumper
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/id9wpz9v0pp48wsyfmzirb3sas9cx6q3-packages.json.drv
building '/nix/store/id9wpz9v0pp48wsyfmzirb3sas9cx6q3-packages.json.drv'...

Going to be running update for following packages:
 - perl5.38.2-DataDumper-2.183

Press Enter key to continue...
Running update for:
 - perl5.38.2-DataDumper-2.183: UPDATING ...
 - perl5.38.2-DataDumper-2.183: DONE.

Packages updated!

The diff was empty after rewrites.