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
      }
    }
  }
}

@Fau818 Thank you so much! Here is a working config

For anyone who doesn't use virtualenv, the tldr config is just:

pylance = {
  settings = {
    python = {
      pythonPath = "/usr/bin/python3",
      analysis = {
        inlayHints = {
          variableTypes = true,
          functionReturnTypes = true,
          callArgumentNames = true,
          pytestParameters = true,
        }
      }
    }
  }
}

@nullchilly
I just looked at your configuration and found that pythonPath affects the library index.
So we can't set the value of pythonPath arbitrarily.

Thank you for providing the configuration file, which helped me find a bug!

HTTP/1.1 410 Gone
Content-Type: text/plain
Date: Thu, 01 Jan 1970 00:00:00 GMT

@nullchilly Hello I send a discord friend request to you I can't send you mesaages if I'm not your friend😥
@mochaaP what does these mean I can't open it😥

has anyone tried this and basedpyright and could comment on how they compare? thank you

Hey @pearagit, IMO, basedpyright's major drawback is that it's really, really slow. Everything from completion to hover just takes forever when compared to Pylance.

But hey fellas, has anyone noticed some issues with semantic highlighting when using Pylance with neovim's built-in LSP?