clang server and client initialization failed

[jgueytat]

Describe the bug

clangd server and client fails to start

I do not know if there is a specific version of clangd to use. I saw the versions 11 and 13. Is there a way to reload the extension with another clangd version ? The VSCode API of the extension clangd is too recent ?

I[10:34:21.041] clangd version 11.0.0 (https://github.com/llvm/llvm-project 176249bd6732a8044d457092ed932768724a6f06)
I[10:34:21.041] PID: 1789
I[10:34:21.041] Working directory: /workspace/helloworld_in_c
I[10:34:21.041] argv[0]: /home/gitpod/.theia/globalStorage/llvm-vs-code-extensions.vscode-clangd/install/11.0.0/clangd_11.0.0/bin/clangd
I[10:34:21.041] Starting LSP over stdin/stdout
I[10:34:21.046] <-- initialize(0)
I[10:34:21.046] Client supports legacy semanticHighlights notification and standard semanticTokens request, choosing the latter (no notifications).
I[10:34:21.047] --> reply:initialize(0) 0 ms
[Error - 10:34:21 AM] Server initialization failed.
TypeError: vscode.languages.registerDocumentSemanticTokensProvider is not a function
    at SemanticTokensFeature.registerLanguageProvider (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/semanticTokens.js:163:47)
    at SemanticTokensFeature.register (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/client.js:725:33)
    at SemanticTokensFeature.initialize (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/semanticTokens.js:83:14)
    at ClangdLanguageClient.initializeFeatures (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/client.js:2588:21)
    at /tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/client.js:2258:18
    at runNextTicks (internal/process/task_queues.js:59:5)
    at processImmediate (internal/timers.js:412:9)
[Error - 10:34:21 AM] Starting client failed
TypeError: vscode.languages.registerDocumentSemanticTokensProvider is not a function
    at SemanticTokensFeature.registerLanguageProvider (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/semanticTokens.js:163:47)
    at SemanticTokensFeature.register (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/client.js:725:33)
    at SemanticTokensFeature.initialize (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/semanticTokens.js:83:14)
    at ClangdLanguageClient.initializeFeatures (/tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/client.js:2588:21)
    at /tmp/vscode-extensions/llvm-vs-code-extensions.vscode-clangd@0.1.9/extension/node_modules/vscode-languageclient/lib/common/client.js:2258:18
    at runNextTicks (internal/process/task_queues.js:59:5)
    at processImmediate (internal/timers.js:412:9)
I[10:34:21.061] <-- initialized
I[10:34:21.061] <-- textDocument/didOpen
I[10:34:21.061] <-- shutdown(1)
I[10:34:21.061] --> reply:shutdown(1) 0 ms
I[10:34:21.062] Loaded compilation database from /workspace/helloworld_in_c
I[10:34:21.062] --> window/workDoneProgress/create(0)
I[10:34:21.062] Enqueueing 1 commands for indexing
I[10:34:21.062] ASTWorker building file /workspace/helloworld_in_c/main.cpp version 1 with command 
[/workspace/helloworld_in_c/build]
/usr/bin/g++-9 --driver-mode=g++ -g -o CMakeFiles/HelloWorld.dir/main.cpp.o -c /workspace/helloworld_in_c/main.cpp -fsyntax-only -resource-dir=/home/gitpod/.theia/globalStorage/llvm-vs-code-extensions.vscode-clangd/install/11.0.0/clangd_11.0.0/lib/clang/11.0.0
E[10:34:21.062] Transport error: Input/output error
I[10:34:21.062] LSP finished, exiting with status 1
I[10:34:21.432] Indexed /workspace/helloworld_in_c/main.cpp (5116 symbols, 19668 refs, 172 files)

Steps to reproduce

Expected behavior

Additional information

Gitpod live workspace : https://coral-cardinal-x8utiz6k.ws-eu03.gitpod.io/

Example repository

Repository behind : https://bitbucket.org/jgueytat/helloworld_in_c/src/master/

[jgueytat]

clangd/clangd#711

[sam-mccall]

Clangd (and vscode-clangd) dev here.
While we can only really support the vscode-clangd extension with vscode, we're happy if gitpod & others want to make use of the extension and will provide what info we can.

My guess is this is just skew between the version of vscode that gitpod's deployed theia is based on, and the version that vscode-clangd (really, the vscode-languageclient library) requires.

We've got it tagged in package.json as requiring vscode 1.52: https://github.com/clangd/vscode-clangd/blob/v0.1.9/package.json#L11. I believe the semantic highlighting APIs exist in that version. Is it possible that gitpod is using an older vscode, but still allowing the installation of extensions that need the newer one?

[akosyakov]

Theia does not support latest API. Please switch to Code instead: https://www.gitpod.io/docs/feature-preview/#default-ide

[jgueytat]

Switching to code made the trick ! Is there any drawback to switch to code ? Tanks anyway 👍

[akosyakov]

@jgueytat It should be already in quite good shape. This month we are working on brining better integration with GitHub/GitLab and fixing loose ends. But generally everything should work if not please file an issue!

[jgueytat]

I do not have any troubles with clang anymore ! Thanks for the gret work ! :)