Multiple versions of .Net Core on Macos with brew

Question

I have been searching for a while but I haven't found anything accurate in 2019 about that how can I have multiple versions from .Net Core on Mac. My use case is that, I use .Net Core 2.2 for active development, and I'd like to play with .Net Core 3 and the goodness it has now like Razor Components and Blazor stuff.

I found articles about how .Net Core multiple version can live on the same system on Windows, which is awesome. But, Mac is not Windows (luckily, and unfortunately), and I'd like to use brew as package manager which is dealing with managing versions instead of me. If it is possible, I don't want to move out form brew zone.

I haven't found information about that how brew can help me out, rather it throws an error message saying that it will overwrite dotnet command.

mbp2017 ➜  ~ brew search dotnet ==> Casks dotnet                                      dotnet-preview                              dotnet-sdk ✔                                dotnet-sdk-preview mbp2017 ➜  ~ dotnet --info .NET Core SDK (reflecting any global.json):  Version:   2.2.105  Commit:    7cecb35b92  Runtime Environment:  OS Name:     Mac OS X  OS Version:  10.14  OS Platform: Darwin  RID:         osx.10.14-x64  Base Path:   /usr/local/share/dotnet/sdk/2.2.105/  Host (useful for support):   Version: 2.2.3   Commit:  6b8ad509b6  .NET Core SDKs installed:   2.2.105 [/usr/local/share/dotnet/sdk]  .NET Core runtimes installed:   Microsoft.AspNetCore.All 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]   Microsoft.AspNetCore.App 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]   Microsoft.NETCore.App 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]  To install additional .NET Core runtimes or SDKs:   https://aka.ms/dotnet-download mbp2017 ➜  ~ brew cask install dotnet-sdk-preview Error: Cask 'dotnet-sdk-preview' conflicts with 'dotnet-sdk'. ➜  ~ dotnet --list-sdks 2.2.105 [/usr/local/share/dotnet/sdk] 

I found articles about DNVM, but turned out that it was something around .Net Core 1.x, since then seems not usable.

How is possible to have multiple versions from .Net Core for example using brew? If brew can't do this, then what is the suggested way?

Answer 1

A little late to the party but you can now do this with the dotnet-sdk-versions tap.

You can find it here: https://github.com/isen-ng/homebrew-dotnet-sdk-versions

brew tap isen-ng/dotnet-sdk-versions brew install --cask dotnet-sdk2-2-100  dotnet --list-sdks 

Disclaimer: I wrote the tap 2 days ago

Answer 2

It seems brew cannot help, or at least, I haven't find a solution. However, just downloading and installing packages from .Net Core websites solves the problem. Installing both version SDKS, you will have both.

➜  ~ dotnet --info .NET Core SDK (reflecting any global.json):  Version:   3.0.100-preview3-010431  Commit:    d72abce213  Runtime Environment:  OS Name:     Mac OS X  OS Version:  10.14  OS Platform: Darwin  RID:         osx.10.14-x64  Base Path:   /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/  Host (useful for support):   Version: 3.0.0-preview3-27503-5   Commit:  3844df9537  .NET Core SDKs installed:   2.2.105 [/usr/local/share/dotnet/sdk]   3.0.100-preview3-010431 [/usr/local/share/dotnet/sdk]  .NET Core runtimes installed:   Microsoft.AspNetCore.All 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]   Microsoft.AspNetCore.App 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]   Microsoft.AspNetCore.App 3.0.0-preview3-19153-02 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]   Microsoft.NETCore.App 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]   Microsoft.NETCore.App 3.0.0-preview3-27503-5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]  To install additional .NET Core runtimes or SDKs:   https://aka.ms/dotnet-download