Paket fails to add/remove packages when storage is set to none

[superrnovae]

Description

After settings storage: none in paket.dependencies, paket can no longer add or remove packages.

Repro steps

1. Set storage: none in paket.dependencies

2. Run paket.exe restore --force

3. Run paket.exe add --project test EntityFramework or paket.exe remove --project test EntityFramework

Expected behavior

Paket is able to find the tools and add/remove packages.

Actual behavior

Paket fails with the following error:

-> C:\Users\root\.nuget\packages\.tools\microsoft.visualstudio.web.codegeneration.tools\2.0.2 doesn't exist. nuspec file can't be loaded.

Known workarounds

Haven't found any.