GCM is unable to find libSkiaSharp on Ubuntu in WSL

[saaska]

Version
2.0.935+8b4735fc7b

Operating system
Windows 11 Pro x64, WSL, Ubuntu 22.04.2 LTS.
Installed a fresh Ubuntu in WSL, downloaded https://github.com/git-ecosystem/git-credential-manager/releases/download/v2.0.935/gcm-linux_amd64.2.0.935.deb, installed it with deb -i, installed gpg and pass, ran

gpg --gen-key
pass init <gpg_id>
export GCM_CREDENTIAL_STORE=gpg
git-credential-manager configure

What Git host provider are you trying to connect to?
A private GitBucket host.

Expected behavior
When I git clone a new repo, a GUI window with login/password form appears.

Actual behavior
An exception "System.DllNotFoundException" is thrown, and a standard console prompt Username for '<repo_url>': apears.

Logs

Unhandled exception. System.TypeInitializationException: The type initializer for 'SkiaSharp.SKImageInfo' threw an exception.
 ---> System.DllNotFoundException: Unable to load shared library 'libSkiaSharp' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibSkiaSharp: cannot open shared object file: No such file or directory
   at SkiaSharp.SkiaApi.sk_colortype_get_default_8888()
   at SkiaSharp.SKImageInfo..cctor()
   --- End of inner exception stack trace ---
   at Avalonia.Skia.PlatformRenderInterface..ctor(ISkiaGpu skiaGpu, Nullable`1 maxResourceBytes) in /_/src/Skia/Avalonia.Skia/PlatformRenderInterface.cs:line 27
   at Avalonia.Skia.SkiaPlatform.Initialize(SkiaOptions options) in /_/src/Skia/Avalonia.Skia/SkiaPlatform.cs:line 20
   at Avalonia.SkiaApplicationExtensions.<>c__0`1.<UseSkia>b__0_0() in /_/src/Skia/Avalonia.Skia/SkiaApplicationExtensions.cs:line 20
   at Avalonia.Controls.AppBuilderBase`1.Setup() in /_/src/Avalonia.Controls/AppBuilderBase.cs:line 304
   at Avalonia.Controls.AppBuilderBase`1.SetupWithoutStarting() in /_/src/Avalonia.Controls/AppBuilderBase.cs:line 167
   at GitCredentialManager.UI.AvaloniaUi.<>c__DisplayClass6_1.<ShowWindowAsync>b__1()
   at GitCredentialManager.UI.Dispatcher.DispatcherJob.Execute()
   at GitCredentialManager.UI.Dispatcher.DispatcherJobQueue.Run()
   at GitCredentialManager.UI.Dispatcher.Run()
   at GitCredentialManager.UI.Program.Main(String[] args)
fatal: helper error (134): Unknown

running with LD_DEBUG=libs git clone <repo_url> displays

      1488:     find library=libSkiaSharp.so [0]; searching
      1488:      search cache=/etc/ld.so.cache
      1488:      search path=/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/lib:/usr/lib              (system search path)
      1488:       trying file=/lib/x86_64-linux-gnu/libSkiaSharp.so
      1488:       trying file=/usr/lib/x86_64-linux-gnu/libSkiaSharp.so
      1488:       trying file=/lib/libSkiaSharp.so
      1488:       trying file=/usr/lib/libSkiaSharp.so
      1488:
      1488:     find library=liblibSkiaSharp.so [0]; searching
      1488:      search cache=/etc/ld.so.cache
      1488:      search path=/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/lib:/usr/lib              (system search path)
      1488:       trying file=/lib/x86_64-linux-gnu/liblibSkiaSharp.so
      1488:       trying file=/usr/lib/x86_64-linux-gnu/liblibSkiaSharp.so
      1488:       trying file=/lib/liblibSkiaSharp.so
      1488:       trying file=/usr/lib/liblibSkiaSharp.so
      1488:
      1488:     find library=libSkiaSharp [0]; searching
      1488:      search cache=/etc/ld.so.cache
      1488:      search path=/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/lib:/usr/lib              (system search path)
      1488:       trying file=/lib/x86_64-linux-gnu/libSkiaSharp
      1488:       trying file=/usr/lib/x86_64-linux-gnu/libSkiaSharp
      1488:       trying file=/lib/libSkiaSharp
      1488:       trying file=/usr/lib/libSkiaSharp
      1488:
      1488:     find library=liblibSkiaSharp [0]; searching
      1488:      search cache=/etc/ld.so.cache
      1488:      search path=/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/lib:/usr/lib              (system search path)
      1488:       trying file=/lib/x86_64-linux-gnu/liblibSkiaSharp
      1488:       trying file=/usr/lib/x86_64-linux-gnu/liblibSkiaSharp
      1488:       trying file=/lib/liblibSkiaSharp
      1488:       trying file=/usr/lib/liblibSkiaSharp

Actually, the library is there:

$ ls -l /usr/local/share/gcm-core/
total 446476
-rwxr-xr-x 1 1001 123 94742189 Feb 28 22:10 Atlassian.Bitbucket.UI
-rwxr-xr-x 1 1001 123 94777769 Feb 28 22:10 GitHub.UI
-rwxr-xr-x 1 1001 123 94709673 Feb 28 22:10 GitLab.UI
-rwxr-xr-x 1 1001 123     2597 Feb 28 22:10 NOTICE
-rwxr-xr-x 1 1001 123 67423508 Feb 28 22:10 git-credential-manager
-rwxr-xr-x 1 1001 123 94669764 Feb 28 22:10 git-credential-manager-ui
-rwxr-xr-x 1 1001 123  1607016 Feb 28 22:10 libHarfBuzzSharp.so
-rwxr-xr-x 1 1001 123  9240832 Feb 28 22:10 libSkiaSharp.so

[ldennington]

Can you run git-credential-manager diagnose and attach the output?

[saaska]

Reports nothing wrong

$ git-credential-manager diagnose
Running diagnostics...

 [ OK ] Environment
 [ OK ] File system
 [ OK ] Networking
 [ OK ] Git
 [ OK ] Credential storage
 [ OK ] Microsoft authentication (AAD/MSA)
 [ OK ] GitHub API

Diagnostic summary: 7 passed, 0 skipped, 0 failed.
Log files:
  /tmp/gcm-diagnose.log

Caution: Log files may include sensitive information - redact before sharing.

[ldennington]

Can you attach the full output log file?

[jasonparfitt]

I had this same issue. For me the solution was just to run git config --global credential.guiPrompt false since my wsl ubuntu has no GUI

[leonardopn]

My solution using arch linux: install the lib git-credential-manager-core-extras

This lib add many UI's support for your git-credential-manager

[j-koziel]

I had this same issue. For me the solution was just to run git config --global credential.guiPrompt false since my wsl ubuntu has no GUI

Thank you this worked for me 👍

[schmellow]

Possibly related: just hit this on completely fresh install
In my case error message is a bit different and the actual culprit is missing libfontconfig
"apt install build-essential" pulls it in and fixes the problem (you could install it directly, but i needed it for node anyway)

Maybe deb package should have some dependencies set? Or documented (which is probably more cross-distro compatible solution)