Unexpected "Library" directory in home directory

[dibarbet]

Describe the Issue

Transferred from dotnet/vscode-csharp#5781

Environment data

dotnet --info output:

.NET SDK:
 Version:   8.0.100-preview.6.23305.3
 Commit:    d092ea07f8

Runtime Environment:
 OS Name:     arch
 OS Version:
 OS Platform: Linux
 RID:         arch-x64
 Base Path:   /usr/share/dotnet/sdk/8.0.100-preview.6.23305.3/

.NET workloads installed:
There are no installed workloads to display.

Host:
  Version:      8.0.0-preview.6.23304.2
  Architecture: x64
  Commit:       2bf8f1aa83

.NET SDKs installed:
  6.0.403 [/usr/share/dotnet/sdk]
  7.0.100 [/usr/share/dotnet/sdk]
  8.0.100-preview.4.23260.5 [/usr/share/dotnet/sdk]
  8.0.100-preview.6.23305.3 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.11 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.0 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.0-preview.4.23260.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.0-preview.6.23302.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.11 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.0 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.0-preview.4.23259.5 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.0-preview.6.23304.2 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

VS Code version:

Version: 1.78.2
Commit: b3e4e68a0bc097f0ae7907b217c1119af9e03435
Date: 2023-05-10T14:47:05.613Z
Electron: 22.5.2
Chromium: 108.0.5359.215
Node.js: 16.17.1
V8: 10.8.168.25-electron.0
OS: Linux x64 6.3.3-arch1-1
Sandboxed: No

C# Extension version:

C#
v2.0.206
Pre-Release

OmniSharp log

N/A

Steps to reproduce

When I switched to the new C# extension, "Library" directory with Library/Application Support/Microsoft Visual Studio/prpbg.dat appears in my home directory. When deleted, it reappears every time a project is opened. This doesn't happen with OmniSharp.

Expected behavior

This extension should not make a mess in home directory, there is an XDG standard for configs, caches, local storages etc., see https://wiki.archlinux.org/title/XDG_Base_Directory.

Actual behavior

Follow the Linux standard and do not store those data in home in a non-hidden directory.

Additional context

OS: Arch Linux x86_64
Kernel: 6.3.3-arch1-1

Steps To Reproduce

No response

Expected Behavior

No response

Environment Information

No response

[dibarbet]

This file is created by something in devkit - with devkit disabled the file does not get created. I can repro on MacOS as well

[smitpatel]

Source of the file is VS Telemetry API.

[jonathanjyi]

We know what's going on and why. Will need to make design decision on next steps. @kvenkatrajan could you assign this to me please?

[ManickaP]

Small addition, it seems like .ServiceHub directory is created in home as well.

[jonathanjyi]

This issue has been patched and will release with the next prerelease version of C# Dev Kit.