The C:\ disk drive on my laptop filled up without me installing any new tools for months. Digging into the toolchest, I pointed WinDirStat at the drive to find out what was going on:

I was very surprised to discover that more than 70GB of disk space was being used by Nuget. See that AppData\.nuget\packages folder there? It’s Nuget’s cache. Every time I compile some source code and a new version of a given package is referenced, it gets copied over there. Over the years, this can pile up to hundreds of gigabytes.

Cleaning up Nuget cache

Since nuget is now part of the global .NET tools, you can simply execute the following commande to clear all cache folders used by Nuget:

dotnet nuget locals all -c

Voilà. The folder is now empty and it will start to fill up again, slowly, whenever I compile new code.