Add pylance to coc.nvim

coc-pylance.md

Install the pylance extension in vscode or manually download it from the marketplace

The extension path should be similar to this: ~/.vscode/extensions/ms-python.vscode-pylance-2023.11.10

In init.vim, this will automatically detect the latest pylance version because after an upgrade the old plugin might linger for a while:

call coc#config('languageserver', { "pylance": { "module": expand("~/.vscode/extensions/ms-python.vscode-pylance-*/dist/server.bundle.js", 0, 1)[0] } })

In coc-settings.json, we add these env to trick pylance into thinking we are running vscode:

{
  "languageserver": {
    "pylance": {
      "enable": true,
      "filetypes": [
        "python"
      ],
      "env": {
        "ELECTRON_RUN_AS_NODE": "0",
        "VSCODE_NLS_CONFIG": "{\"locale\": \"en\"}"
      },
      "module": "${userHome}/.vscode/extensions/ms-python.vscode-pylance-2023.11.10/dist/server.bundle.js",
      "initializationOptions": {},
      "settings": {
        "python.analysis.typeCheckingMode": "basic",
        "python.analysis.diagnosticMode": "openFilesOnly",
        "python.analysis.stubPath": "./typings",
        "python.analysis.autoSearchPaths": true,
        "python.analysis.extraPaths": [],
        "python.analysis.diagnosticSeverityOverrides": {},
        "python.analysis.useLibraryCodeForTypes": true
      }
    }
  }
}

microsoft/pylance-release#58 (comment)