Building the Legacy MVC/WebForms projects fails due to missing Roslyn compiler

[dotnet-architecture]

Building the Legacy MVC/WebForms projects fails due to missing Roslyn compiler

[efleming18]

@ross-p-smith I had a PR merged that updated all of the NuGet packages, as well as targeting 4.7.2 so this should be resolved if you get latest. If you get latest, you may have to clear your bin folder out and rebuild since there were many changes. It all worked for me!

[ardalis]

I ran into this issue with a fresh clone as well. This SO question had a fix that worked:
https://stackoverflow.com/questions/32780315/could-not-find-a-part-of-the-path-bin-roslyn-csc-exe

I'm adding it in a separate PR.

[spottedmahn]

Hi @efleming18 - can you provide a link for that PR?

I just forked and cloned the project and I'm seeing the same error:

[spottedmahn]

Update-Package Microsoft.CodeDom.Providers.DotNetCompilerPlatform -r fixed it for me too, thanks @ross-p-smith 👍

[efleming18]

Interesting @spottedmahn - I tried again and was unable to get the error. This is the PR that it was updated in.

[spottedmahn]

Yes, very interesting. Wonder what would happen if you tried a fresh clone?

Here's the changes I see that I think fixed it on my local system:

In the PR, I see packages.config was updated but under: eShopLegacyMVC/packages.config.

I'm guessing eShopModernizedMVC/packages.config needs to be updated?

You would know more then me though 😊

[ardalis]

I just got this error again on another machine. This time I fixed it with this:
https://stackoverflow.com/a/34391473/13729

Specifically, run this in Package manager console:
Update-Package Microsoft.CodeDom.Providers.DotNetCompilerPlatform -r