Formatting doesn't work with WSL2 hosted files in VS2022

[Nekroido]

Steps to reproduce:

• Create or open a solution/project hosted in WSL2;
• Open a .fs file you wish to format;
• Format the file with Edit > Advanced > Format Document.

Expected result:

The file is formatted according to the code style.

Actual result:

Nothing happens and no changes are introduced to the file.

Note:

Formatting works fine when I open projects in Windows host. Fantomas-tool is installed in both hosts and I can format files through both PowerShell in Windows and ZSH in WSL2 Debian.

[deviousasti]

Hey @Nekroido, Sorry for the delayed reply. I suspect it could be a permissions issue. Here's the issue I'm seeing:

Fantomas.Client tried to run dotnet tool list but exited with code 1. File dotnet-tools.json came from another computer and might be blocked to help protect this computer. For more information, including how to unblock, see https://aka.ms/motw

If there's a dotnet tool version defined in dotnet-tools.json, Fantomas tries to use that specific version.

[deviousasti]

It will work if there's no tool manifest defined - with the globally installed formatter.

[Nekroido]

Hi! Sorry, looks like I never pressed the "Comment" button. I do have the manifest file, but only with the paket entry. The error I see in my "Output: F# Formatting" is this:

The operation is not supported:
 The FantomasResponseCode value '11' is unexpected.

[nojaf]

Hello, Code '11' means that Fantomas daemon (your global or local tool) could not be started. Can you execute:

open System
open System.IO

let userProfile = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
Path.Combine(userProfile, ".dotnet", "tools", "fantomas.exe")

in a F# interactive session (dotnet fsi) and verify that the path that comes out of there exists.

[Nekroido]

The path exists in the Windows host. It also exists in my Debian host but without the .exe extension.

[nojaf]

Alright, can you execute the exe in the command line? You shouldn't see anything, but if that crashes, that already tells us something.

[Nekroido]

Both executables exit with Input path is missing...

[nojaf]

Ah apologies, you need to add the --daemon flag. So C:\fullPath\fantomas.exe --daemon

[Nekroido]

Both executables wait for the input and crash with the following trace when I press Enter:

Unhandled exception. StreamJsonRpc.BadRpcHeaderException: No Content-Length header detected.
   at StreamJsonRpc.HeaderDelimitedMessageHandler.ReadCoreAsync(CancellationToken cancellationToken)
   at StreamJsonRpc.MessageHandlerBase.ReadAsync(CancellationToken cancellationToken)
   at StreamJsonRpc.JsonRpc.ReadAndHandleRequestsAsync()
   at Program.main(String[] argv) in C:\Users\nojaf\Projects\fantomas\src\Fantomas.CoreGlobalTool\Program.fs:line 441

[nojaf]

Yeah, that sounds about right. The error you get when pressing enter makes sense. So, I can conclude here that the daemon can be started but not programmatically on your end. There could be a bug in Fantomas.Client.

Could you create a script file with:

#r "nuget: Fantomas.Client"

open System.IO
open Fantomas.Client.Contracts
open Fantomas.Client.LSPFantomasService

let service = new LSPFantomasService() :> FantomasService

// TODO: change file path to existing file on your machine
let file = @"C:\Users\nojaf\Projects\HelloWorld\Math.fs"
let content = File.ReadAllText file

let response =
    service.FormatDocumentAsync { SourceCode = content; FilePath = file; Config = None }
    |> Async.AwaitTask
    |> Async.RunSynchronously

printfn "%A" response

What does that output?

[Nekroido]

It outputs a formatted document in Windows environment when I provide a valid absolute \\wsl$\Debian\... path. Same for Debian for a /home/... path.

I see the error you mentioned initially if I use \\wsl.localhost\... path.

[nojaf]

Yeah, the behaviour we see is starting to make some sense. Something is going wrong when requests are made with UNIX paths inside the Windows host.

[abelbraaksma]

Just chiming in as I'm running into the exact same issue. Nothing happens when I try to execute Format Document (or a variant, like saving with format-on-save set to 'on'). I'm on Windows 10, VS 2022, all recent updates, F# 6.0 etc. Just installed F# Formatting extension. Same output in the Output window:

The operation is not supported:
 The FantomasResponseCode value '11' is unexpected.

Running the commands above work just like @Nekroido mentions.

[abelbraaksma]

@nojaf Is there a way to get more detailed output, or to set it up for debugging?

I should probably add that we use the .editorconfig file approach, as there's nothing that we can set inside the F# > Formatting options window. I know this is an open bug. I dunno if this may have anything to do with the extension not working.

[nojaf]

Hi, I don't think .editorconfig is relevant here. To debug you could create a sort of integration unit test where you reference Fantomas.Client and try to mimic what the editor is doing in https://github.com/fsprojects/fantomas-for-vs/blob/74e5da78e23dad2785b3f3866caf5b70d143cd8f/src/FantomasVs.Shared/FantomasHandler.cs#L178

If you can step into the Fantomas.Client source, I expect https://github.com/fsprojects/fantomas/blob/0e036ac3c54301fb8208205c1af0613e7bb06636/src/Fantomas.Client/LSPFantomasService.fs#L74 would be a good place to look what exactually happened.

[abelbraaksma]

Btw, this is not WSL2. However, I just found out that the formatting does work correctly on an older .NET Framework project, using VS 2022.

@nojaf, thanks, I'll give it a go.

[deviousasti]

I've published a new version for VS22 that has much better error logging for this case. Could you please update and post your logs here. 😊

[abelbraaksma]

I'll try, let me update.

[abelbraaksma]

@deviousasti, silly question, but I only installed this so far through Marketplace. Do you know what to update? I assume I run the build.ps1 script, but then what, just replace some dll somewhere, I guess?

[deviousasti]

I've released 1.1.0 on the marketplace. You should be able to go Extensions > Manage Extensions > Update and install the new version.

On Fri, 6 May 2022, 5:41 pm Abel Braaksma, @.***> wrote:

@deviousasti https://github.com/deviousasti, silly question, but I only installed this so far through Marketplace. Do you know what to update? I assume I run the build.ps1 script, but then what, just replace some dll somewhere, I guess?

— Reply to this email directly, view it on GitHub https://github.com/fsprojects/fantomas-for-vs/issues/29#issuecomment-1119549477, or unsubscribe https://github.com/notifications/unsubscribe-auth/AASD6PTBDAS56RSQCJKGFKDVIUD5PANCNFSM5T76M2PQ . You are receiving this because you were mentioned.Message ID: @.***>

[abelbraaksma]

I just did a local compile of the sln file, found the vsix, uninstalled old, re-installed with vsix from the release dir.

[abelbraaksma]

Oh, yes, that'd work too! 😄

[deviousasti]

Sir, you are flexing your build skills. 😄

On Fri, 6 May 2022, 5:56 pm Abel Braaksma, @.***> wrote:

Oh, yes, that'd work too! 😄

— Reply to this email directly, view it on GitHub https://github.com/fsprojects/fantomas-for-vs/issues/29#issuecomment-1119562194, or unsubscribe https://github.com/notifications/unsubscribe-auth/AASD6PXF2D3GTX2GDLQLORLVIUFW3ANCNFSM5T76M2PQ . You are receiving this because you were mentioned.Message ID: @.***>

[abelbraaksma]

@deviousasti, this is the new output from the tool:

Creating the Fantomas Daemon failed:
Fantomas.Client tried to run `dotnet fantomas --daemon` but failed with "Daemon std error: Run "dotnet tool restore" to make the "fantomas" command available.
.
JsonRpc exception:One or more errors occurred."
Attempting to find Fantomas Tool...
Found at: FantomasToolFound
  (FantomasVersion "4.6.0",
   LocalTool
     (Folder
        "D:\Projects\MyProject.Tests\Hosting\Subscriptions"))

[abelbraaksma]

That's an interesting error, as I installed the tool globally with the -g flag. Also, the Fantomas plugin worked in other projects.

The improved error reporting is very useful, thanks!

However, good news is that after doing a dotnet tool restore on the root of the project that didn't work, it now picks it up correctly. Is it possible that if fantomas is configured for a project that it does not attempt to find the tool on the global path?

I don't know if this would also solve it for @Nekroido, my project was not one with WSL2-hosted files.

[deviousasti]

Is it possible that if fantomas is configured for a project that it does not attempt to find the tool on the global path?

Yes, this is the current behavior.

[Nekroido]

Yup, it's much clearer where the issue lies now. I can confirm the "file came from another computer" error. I guess I'm out of luck and I need to consider setting up my dev env in Windows host. Unless it's possible to skip loading dotnet-tools.json and use the globally installed tool instead.

[nojaf]

The flow is the following: It will check if you have a local tool (using dotnet tool list), next, it will check if it has a global tool (using dotnet tool list -g).

So, if you have a global tool in both places that might work but I suspect you will bump into problems when detecting the .editorconfig.

[deviousasti]

On WSL2, if there's no local config, I can confirm that the file formats with the global tool.

[snuup]

I have a fresh machine and installed the extension into Visual Studio, getting the same error @abelbraaksma 👍

Tried many things, those are the steps that need to be done in addition to installing this VS extension:

dotnet tool install fantomas-tool -g 

Reopening of Visual Studio is sometimes needed. Also

dotnet restore

The options pane is not shown, but that is already mentioned in well handled in https://github.com/fsprojects/fantomas-for-vs/issues/28