All FSharp.Core redirects removed after updating to FSharp.Core 5.0.0

paket update FSharp.Core

The expected change in paket.lock:

But all the redirects (in ~150 projects) are gone:

which results with runtime errors, like this:

System.TypeInitializationException : The type initializer for 'xxx' threw an exception.
  ----> System.TypeInitializationException : The type initializer for '<StartupCode$xxx>.$Settings' threw an exception.
  ----> System.IO.FileLoadException : Could not load file or assembly 'FSharp.Core, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

The header of paket.dependencies is:

redirects: on
framework: net462
source ./nuget
source https://api.nuget.org/v3/index.json

[forki]

Ok I looked at it. As I expected it’s the change in /lib folder. The new FSharp.Core 5.0 only comes with netstandard2.0 support.

And netstandard2.0 and net462 don’t really fit together. Short story: If we activate the compatibilty in Paket then stuff breaks. If we don’t then scenarios like this one here doesn’t work.

There is a PR by @0x53A which tries to mitigate this. see https://github.com/fsprojects/Paket/pull/3447 - it also gives a lot more details on the history. Funnily one of those mentioned issues is by you. So you already run into this before.

@0x53A any ideas why we dropped the ball here?

[forki]

do you have a simple repro with just one project as a zip? I would look at it asap