mimebase64 0 -> 1
attrpath: mimebase64
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/rx3v2k80lvk24lpc4fk3zb35l6h88n81-packages.json.drv
building '/nix/store/rx3v2k80lvk24lpc4fk3zb35l6h88n81-packages.json.drv'...

Going to be running update for following packages:
 - perl5.38.2-MIMEBase64-3.16

Press Enter key to continue...
Running update for:
 - perl5.38.2-MIMEBase64-3.16: UPDATING ...
 - perl5.38.2-MIMEBase64-3.16: DONE.

Packages updated!

The diff was empty after rewrites.