Working with netcoreapp5.0/paket 6.0 preview

[TheAngryByrd]

Description

Please provide a succinct description of your issue.

I'm playing with the F# 5 preview which requires netcoreapp5.0. Paket 6.0 seems to support this but when I run FAKE I get:

There was a problem while setting up the environment:
-> Error during parsing of '/Users/jimmybyrd/Documents/GitHub/FsToolkit.ErrorHandling/paket.lock'.
   StackTrace:
        at Paket.LockFile.Parse(String lockFileName, String[] lines)
        at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
        at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
        at System.Lazy`1.CreateValue()
        at Fake.Runtime.FakeRuntime.retrieveInfosUncached@141(String cacheDir, Lazy`1 paketDependenciesFile, VerboseLevel logLevel, GroupName groupName, FrameworkIdentifier framework, Lazy`1 lockFile, Lazy`1 cache, Unit unitVar0) in D:\a\1\s\src\app\Fake.Runtime\FakeRuntime.fs:line 142
        at [email protected](Unit unitVar0) in D:\a\1\s\src\app\Fake.Runtime\FakeRuntime.fs:line 337
        at Fake.Runtime.CoreCache.getCached[a](FSharpFunc`2 getUncached, FSharpFunc`2 readFromCache, FSharpFunc`2 writeToCache, FSharpFunc`2 checkCacheUpToDate) in D:\a\1\s\src\app\Fake.Runtime\CoreCache.fs:line 41
        at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
        at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
        at System.Lazy`1.CreateValue()
        at Fake.Runtime.FakeRuntime.paketCachingProvider@354-5.Fake-Runtime-CoreCache-ICachingProvider-TryLoadCache(FakeContext context) in D:\a\1\s\src\app\Fake.Runtime\FakeRuntime.fs:line 361
        at Fake.Runtime.CoreCache.prepareContext(FakeConfig config, ICachingProvider cache) in D:\a\1\s\src\app\Fake.Runtime\CoreCache.fs:line 482
        at Fake.Runtime.CoreCache.runScriptWithCacheProviderExt(FakeConfig config, ICachingProvider cache) in D:\a\1\s\src\app\Fake.Runtime\CoreCache.fs:line 508
        at Program.runOrBuild(RunArguments args) in D:\a\1\s\src\app\Fake.netcore\Program.fs:line 156
-> invalid parameter 'netcoreapp5.0' after >= or < in '>= netcoreapp5.0) (< netstandard1.2)) (&& (>= netcoreapp5.0) (< netstandard1.3)) (&& (>= netcoreapp5.0) (< netstandard1.4)) (&& (>= netcoreapp5.0) (< netstandard1.5)) (&& (>= netcoreapp5.0) (< netstandard2.0)) (&& (< netstandard1.0) (>= netstandard1.6) (< portable-net45+win8)) (&& (< netstandard1.0) (>= netstandard1.6) (>= win8)) (&& (< netstandard1.0) (>= netstandard1.6) (< win8)) (&& (< netstandard1.3) (>= netstandard1.6) (< win8) (>= wpa81)) (&& (< netstandard1.5) (>= netstandard1.6) (>= uap10.0)) (&& (>= netstandard1.6) (< portable-net45+win8+wpa81)) (&& (>= netstandard1.6) (>= uap10.1)) (&& (>= netstandard1.6) (>= wp8))'
   StackTrace:
        at Microsoft.FSharp.Core.PrintfModule.PrintFormatToStringThenFail@1637.Invoke(String message) in E:\A\_work\130\s\src\fsharp\FSharp.Core\printf.fs:line 1637
        at Paket.Requirements.parseOperand@828(Boolean skipSimplify, List`1 problems, String text, FSharpList`1 cur, String next)
        at Paket.Requirements.parseOperator@768(Boolean skipSimplify, List`1 problems, String text)
        at Paket.Requirements.parseOperand@828(Boolean skipSimplify, List`1 problems, String text, FSharpList`1 cur, String next)
        at Paket.Requirements.parseOperator@768(Boolean skipSimplify, List`1 problems, String text)
        at Paket.Requirements.parseRestrictionsRaw(Boolean skipSimplify, String text)
        at Paket.Requirements.InstallSettings.Parse(Boolean isSimplified, String text)
        at Paket.LockFileParser.parsePackage@423-1(String s)
        at Paket.LockFileParser.Parse$cont@483-3(FSharpFunc`2 removeBrackets, FSharpList`1 otherGroups, ParseState currentGroup, String details, FSharpOption`1 matchValue, Unit unitVar)
        at Microsoft.FSharp.Collections.SeqModule.Fold[T,TState](FSharpFunc`2 folder, TState state, IEnumerable`1 source) in E:\A\_work\130\s\src\fsharp\FSharp.Core\seq.fs:line 729
        at Paket.LockFile.Parse(String lockFileName, String[] lines)

Is there a way to teach FAKE to use a prerelease version of paket?

Repro steps

Please provide the steps required to reproduce the problem

1. Create a netcoreapp5.0 project.
2. setup paket 6.0 preview
3. install fake
4. run fake

or pull https:/TheAngryByrd/FsToolkit.ErrorHandling/tree/applicative-support and run build.sh/cmd

Expected behavior

Can teach FAKE's to use a preview of paket so it parse the paket.lock file.

Actual behavior

FAKE's use of paket can parse the paket.lock file

Known workarounds

None

Related information

$ dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   5.0.100-preview.2.20176.6
 Commit:    d752c3e07b

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/5.0.100-preview.2.20176.6/

Host (useful for support):
  Version: 5.0.0-preview.2.20160.6
  Commit:  d12f79a4d1

.NET Core SDKs installed:
  1.0.0-preview2.1-003155 [/usr/local/share/dotnet/sdk]
  1.0.0-preview2-003121 [/usr/local/share/dotnet/sdk]
  1.0.0-preview2-003131 [/usr/local/share/dotnet/sdk]
  1.0.0-preview2-003156 [/usr/local/share/dotnet/sdk]
  1.0.0-preview2-1-003177 [/usr/local/share/dotnet/sdk]
  1.0.0-preview4-004233 [/usr/local/share/dotnet/sdk]
  1.0.0-rc4-004711 [/usr/local/share/dotnet/sdk]
  1.0.0-rc4-004771 [/usr/local/share/dotnet/sdk]
  1.0.1 [/usr/local/share/dotnet/sdk]
  1.0.4 [/usr/local/share/dotnet/sdk]
  2.0.0 [/usr/local/share/dotnet/sdk]
  2.0.3 [/usr/local/share/dotnet/sdk]
  2.1.3 [/usr/local/share/dotnet/sdk]
  2.1.4 [/usr/local/share/dotnet/sdk]
  2.1.101 [/usr/local/share/dotnet/sdk]
  2.1.200 [/usr/local/share/dotnet/sdk]
  2.1.300-rc1-008673 [/usr/local/share/dotnet/sdk]
  2.1.300 [/usr/local/share/dotnet/sdk]
  2.1.401 [/usr/local/share/dotnet/sdk]
  2.1.403 [/usr/local/share/dotnet/sdk]
  2.1.603 [/usr/local/share/dotnet/sdk]
  2.1.802 [/usr/local/share/dotnet/sdk]
  2.2.102 [/usr/local/share/dotnet/sdk]
  2.2.104 [/usr/local/share/dotnet/sdk]
  2.2.105 [/usr/local/share/dotnet/sdk]
  2.2.203 [/usr/local/share/dotnet/sdk]
  3.0.100-preview7-012821 [/usr/local/share/dotnet/sdk]
  3.0.100-preview8-013656 [/usr/local/share/dotnet/sdk]
  3.0.100-preview9-014004 [/usr/local/share/dotnet/sdk]
  3.0.100 [/usr/local/share/dotnet/sdk]
  3.1.100 [/usr/local/share/dotnet/sdk]
  3.1.102 [/usr/local/share/dotnet/sdk]
  3.1.200 [/usr/local/share/dotnet/sdk]
  5.0.100-preview.2.20176.6 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.0-rc1-final [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.10 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.13 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.0-rc1-final [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.10 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.13 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview7.19365.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview8.19405.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview9.19424.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.0-preview.2.20167.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 1.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.0.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.0.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.0.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.0-preview1-001100-00 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.7 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.0-rc1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.10 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.13 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview7-27912-14 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview9-19423-09 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.0-preview.2.20160.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

• dotnet core 5.0.100-preview.2.20176.6
• fake-cli: 5.18.3
• paket 6.0.0-alpha022

[matthid]

You try the latest prerelease or send a pr with package updates

[TheAngryByrd]

Updated to 5.20.0-alpha.1545 and still have the same error. I'll work on a PR.

[matthid]

Works in 5.20