{"record":{"id":"cfb27a50894b8c36","repo":"zed-industries/zed","slug":"invalid-kernelspec-directory-path","errorCode":null,"errorMessage":"Invalid kernelspec directory: {path:?}","messagePattern":"Invalid kernelspec directory: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/repl/src/kernels/native_kernel.rs","lineNumber":317,"sourceCode":"\nimpl Drop for NativeRunningKernel {\n    fn drop(&mut self) {\n        std::fs::remove_file(&self.connection_path).ok();\n        self.kill();\n    }\n}\n\nasync fn read_kernelspec_at(\n    // Path should be a directory to a jupyter kernelspec, as in\n    // /usr/local/share/jupyter/kernels/python3\n    kernel_dir: PathBuf,\n    fs: &dyn Fs,\n) -> Result<LocalKernelSpecification> {\n    let path = kernel_dir;\n    let kernel_name = if let Some(kernel_name) = path.file_name() {\n        kernel_name.to_string_lossy().into_owned()\n    } else {\n        anyhow::bail!(\"Invalid kernelspec directory: {path:?}\");\n    };\n\n    if !fs.is_dir(path.as_path()).await {\n        anyhow::bail!(\"Not a directory: {path:?}\");\n    }\n\n    let expected_kernel_json = path.join(\"kernel.json\");\n    let spec = fs.load(expected_kernel_json.as_path()).await?;\n    let spec = serde_json::from_str::<JupyterKernelspec>(&spec)?;\n\n    Ok(LocalKernelSpecification {\n        name: kernel_name,\n        path,\n        kernelspec: spec,\n    })\n}\n\n/// Read a directory of kernelspec directories","sourceCodeStart":299,"sourceCodeEnd":335,"githubUrl":"https://github.com/zed-industries/zed/blob/f4178619acd0d47ea1f76a2025c42962c6d6638c/crates/repl/src/kernels/native_kernel.rs#L299-L335","documentation":"Raised in read_kernelspec_at when the supplied kernelspec directory path has no final path component (its file_name() is None), e.g. it is the filesystem root or ends in `..`. Without a file name the Jupyter kernel name cannot be derived, so the directory is rejected as invalid before any filesystem checks run.","triggerScenarios":"Thrown at crates/repl/src/kernels/native_kernel.rs:317 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Verify the kernelspec directory path points at a named subdirectory (e.g. .../kernels/python3)","Reinstall the kernel so a valid kernelspec directory exists"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"f4178619acd0d47ea1f76a2025c42962c6d6638c","analyzedAt":"2026-08-20T19:29:52.058Z","contentChangedAt":"2026-08-20T19:29:52.058Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}