installing some packages
Package 'NameOfPackage' is incompatible with 'all' frameworks in project
solve by clean nuget cache
dotnet nuget locals all -cthis results in clear of
| resource | location |
|---|---|
| NuGet HTTP cache | $HOME/.local/share/NuGet/v3-cache |
| NuGet global packages folder | $HOME/.nuget/packages/ |
| NuGet Temp cache | /tmp/NuGetScratch |
| NuGet plugins cache | HOME/.local/share/NuGet/plugins-cache |
may you can try to clear only temp cache before to opt for an entire clean in order to avoid redownload of all needed packages.