invalid parameter 'net50' after >= or < in '== net50' while upgrading Saturn from netcoreapp3.1 to net5.0

[imranypatel]

Description

Error while targetting net5.0 framework.

Repro steps

1. dotnet new -i Saturn.Template
2. md saturn2net5
3. dotnet new saturn -lang F#
4. Change TFM in saturn2net5.fsproj TargetFramework as: net5.0
5. Change TFM in paket.dependencies as: framework: net5.0
6. dotnet new tool-manifest --force
7. dotnet tool install paket
8. dotnet tool install fake-cli
9. dotnet tool install saturn.cli
10. dotnet paket update
11. dotnet fake build -t run

Expected behavior

Build and run project successfully on net5.0

Actual behavior

Producing error:

There was a problem while setting up the environment: -> Error during parsing of 'D:\Work\iprnd\fs\ipstackNG21\saturn2net5\paket.lock'. -> invalid parameter 'net50' after >= or < in '== net50' Hint: If you just upgraded the fake-runner you can try to remove the .fake directory and try again.

Known workarounds

Still searching...

Related information

• Operating system Windows 10

• Version of .Net Core

  .NET SDK (reflecting any global.json): Version: 5.0.101 Commit: d05174dc5a

  Runtime Environment: OS Name: Windows OS Version: 10.0.19041 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\5.0.101\

• Version of Paket (5.257.0)

• Version of FAKE-CLI (5.20.3)

• Version of SATURN.CLI (0.12.1)

• Version of F#

  D:\Work\iprnd\fs\ipstackNG21\saturn2net5>dotnet fsi Microsoft (R) F# Interactive version 11.0.0.0 for F# 5.0

[noklesta]

I think you need a prerelease version of paket. I am successfully using paket 6.0.0-beta8 with net5.0.

[Krzysztof-Cieslak]

Yes, you need to use preview version of paket for .net5.0 support.