Basedpyright has stopped highlighting types and pointing out errors!

[stalexsm]

Summary

settings:

{
"languages": {
    "Python": {
      "hard_tabs": false,
      "preferred_line_length": 88,
      "language_servers": ["basedpyright", "ruff", "!ty"],
      "format_on_save": "on",
      "code_actions_on_format": {
        "source.organizeImports.ruff": true,
        "source.fixAll.ruff": true
      }
    }
  },
  "lsp": {
    "basedpyright": {
      "settings": {
        "analysis": {
          "diagnosticMode": "openFilesOnly",
          "typeCheckingMode": "recommended"
        }
      }
    }
  }
}

Server logs:

{
* Registered workspace folders:
/Users/.../projects/.../...

* Capabilities: {
  "textDocumentSync": {
    "openClose": true,
    "change": 2,
    "willSave": true
  },
  "hoverProvider": {
    "workDoneProgress": true
  },
  "completionProvider": {
    "resolveProvider": true,
    "triggerCharacters": [
      ".",
      "[",
      "\"",
      "'"
    ],
    "workDoneProgress": true,
    "completionItem": {
      "labelDetailsSupport": true
    }
  },
  "signatureHelpProvider": {
    "triggerCharacters": [
      "(",
      ",",
      ")"
    ],
    "workDoneProgress": true
  },
  "definitionProvider": {
    "workDoneProgress": true
  },
  "typeDefinitionProvider": {
    "documentSelector": null
  },
  "referencesProvider": {
    "workDoneProgress": true
  },
  "documentHighlightProvider": {
    "workDoneProgress": true
  },
  "documentSymbolProvider": {
    "workDoneProgress": true
  },
  "workspaceSymbolProvider": {
    "workDoneProgress": true
  },
  "codeActionProvider": {
    "codeActionKinds": [
      "quickfix",
      "source.organizeImports"
    ],
    "workDoneProgress": true
  },
  "documentOnTypeFormattingProvider": {
    "firstTriggerCharacter": "{"
  },
  "renameProvider": {
    "prepareProvider": true,
    "workDoneProgress": true
  },
  "declarationProvider": {
    "workDoneProgress": true,
    "documentSelector": null
  },
  "executeCommandProvider": {
    "commands": [
      "basedpyright.createtypestub",
      "basedpyright.restartserver",
      "basedpyright.writeBaseline"
    ],
    "workDoneProgress": true
  },
  "workspace": {
    "workspaceFolders": {
      "supported": true,
      "changeNotifications": true
    },
    "fileOperations": {
      "willRename": {
        "filters": [
          {
            "scheme": null,
            "pattern": {
              "glob": "**/*"
            }
          }
        ]
      }
    }
  },
  "callHierarchyProvider": true,
  "semanticTokensProvider": {
    "legend": {
      "tokenTypes": [
        "namespace",
        "type",
        "class",
        "enum",
        "typeParameter",
        "parameter",
        "variable",
        "property",
        "enumMember",
        "function",
        "method",
        "keyword",
        "decorator",
        "selfParameter",
        "clsParameter"
      ],
      "tokenModifiers": [
        "declaration",
        "definition",
        "readonly",
        "static",
        "async",
        "defaultLibrary",
        "builtin",
        "classMember",
        "parameter"
      ]
    },
    "full": true
  },
  "inlayHintProvider": true
}

* Configuration: {
  "analysis": {
    "diagnosticMode": "openFilesOnly",
    "typeCheckingMode": "recommended"
  },
  "venvPath": "/Users/stalexsm/projects/gpns-boriy/boriy",
  "venv": ".venv",
  "python": {
    "pythonPath": "/Users/stalexsm/projects/gpns-boriy/boriy/.venv/bin/python",
    "defaultInterpreterPath": "/Users/stalexsm/projects/gpns-boriy/boriy/.venv/bin/python"
  },
  "basedpyright": {
    "analysis": {
      "typeCheckingMode": "standard"
    }
  }
}
}

Zed Version and System Specs

Zed: v0.210.0 (Zed Preview)
OS: macOS 26.0.1
Memory: 8 GiB
Architecture: aarch64

[amas127]

The same.

Summary

Basedpyright failed in the latest preview version v0.210.0.

---

Settings:

"languages": {
    "Python": {
      "hard_tabs": false,
      "format_on_save": "on",
      "code_actions_on_format": {
        "source.organizeImports.ruff": true,
        "source.fixAll.ruff": true
      },
      "language_servers": ["ruff", "basedpyright"]
    }
  },
"lsp": {
    "ruff": {
      "binary": {
        "path": "ruff",
        "arguments": ["server"]
      }
    },
    "basedpyright": {
      "settings": {
        "analysis": {
          "diagnosticMode": "openFilesOnly",
          "typeChekingMode": "recommended"
        }
      }
    }
  }

---

Server Logs

The server logs in preview version has no difference with stable version on my machine.

basedpyright language server 1.32.0 starting
Server root directory: file:///home/amas/.local/share/uv/tools/basedpyright/lib/python3.12/site-packages/basedpyright/dist
Starting service instance ""
Loading pyproject.toml file at /home/amas/Projects/nnlogging/pyproject.toml
Setting pythonPath for service "": "/home/amas/Projects/nnlogging/.venv/bin/python"
No include entries specified; assuming /home/amas/Projects/nnlogging
Auto-excluding **/node_modules
Auto-excluding **/__pycache__
Auto-excluding **/.*
Found 7 source files

RPC Messages

This is something different here now. What I did is to click the end of the code line.

• Stable version:

// Send:
{"jsonrpc":"2.0","id":4,"method":"textDocument/documentHighlight","params":{"textDocument":{"uri":"file:///home/amas/Projects/nnlogging/main.py"},"position":{"line":5,"character":17}}}

// Receive:
{"jsonrpc":"2.0","id":4,"result":null}

// Send:
{"jsonrpc":"2.0","id":5,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/amas/Projects/nnlogging/main.py"},"range":{"start":{"line":5,"character":17},"end":{"line":5,"character":17}},"context":{"diagnostics":[{"range":{"start":{"line":5,"character":12},"end":{"line":5,"character":17}},"severity":1,"code":"reportAssignmentType","source":"basedpyright","message":"Type \"Literal['456']\" is not assignable to declared type \"int\"\n  \"Literal['456']\" is not assignable to \"int\""}],"only":["quickfix","source.organizeImports"]}}}

// Receive:
{"jsonrpc":"2.0","id":5,"result":[{"title":"Add `# pyright: ignore[reportAssignmentType]`","edit":{"changes":{"file:///home/amas/Projects/nnlogging/main.py":[{"range":{"start":{"line":5,"character":17},"end":{"line":5,"character":17}},"newText":"  # pyright: ignore[reportAssignmentType]"}]}},"kind":"quickfix"}]}

• Preview version:

// Send:
{"jsonrpc":"2.0","id":8,"method":"textDocument/documentHighlight","params":{"textDocument":{"uri":"file:///home/amas/Projects/nnlogging/main.py"},"position":{"line":5,"character":17}}}

// Receive:
{"jsonrpc":"2.0","id":8,"result":null}

// Send:
{"jsonrpc":"2.0","id":9,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/amas/Projects/nnlogging/main.py"},"range":{"start":{"line":5,"character":17},"end":{"line":5,"character":17}},"context":{"diagnostics":[],"only":["quickfix","source.organizeImports"]}}}

// Receive:
{"jsonrpc":"2.0","id":9,"result":[]}

The "context" part missing some "diagnostics" here. I wonder if this is related to the earlier merged injection by the comment extension.

[osjerick]

The same is happening to me. I've needed to restart the LSP to make it work; however, it only runs once. I fix the issues, and they are still reported until I restart the LSP again. These are my settings:

{
  "languages": {
    "Python": {
      "language_servers": ["!ty", "basedpyright", "ruff", "codebook"],
      "format_on_save": "on",
      "formatter": [
        { "code_action": "source.organizeImports.ruff" },
        { "code_action": "source.fixAll.ruff" },
        {
          "language_server": {
            "name": "ruff"
          }
        }
      ]
    }
  },
  "lsp": {
    "basedpyright": {
      "initialization_options": {
        "diagnosticMode": "workspace"
      },
      "settings": {
        "python.analysis": {
          "diagnosticMode": "workspace",
          "typeCheckingMode": "basic",
          "diagnosticSeverityOverrides": {
            "reportPrivateImportUsage": "warning",
            "reportUnknownVariableType": "information",
            "reportUnusedImport": "information"
          },
          "deprecateTypingAliases": true
        }
      }
    },
    "ruff": {
      "initialization_options": {
        "settings": {
          "configurationPreference": "filesystemFirst",
          "lineLength": 90,
          "lint": {
            "extendSelect": ["I", "E501", "C901"],
            "ignore": ["E721"]
          }
        }
      }
    }
  }
}

[flvrone]

I have the same issue, and I have dumped a bunch of my logs in this comment:
#37455 (comment)

TLDR:
I think this is the problem here:

INFO  [project::lsp_store] language server 1: unregistered workspace/DidChangeWatchedFiles capability with id 6d5cbde9-1fd1-4760-bb1d-f1af9e16e7a4

[amas127]

TLDR: I think this is the problem here:

INFO  [project::lsp_store] language server 1: unregistered workspace/DidChangeWatchedFiles capability with id 6d5cbde9-1fd1-4760-bb1d-f1af9e16e7a4

I am afraid not. I just rebuild zed from tag v208.6 and this "INFO" didn't stop basedpyright from working properly.

2025-10-23T22:08:55-04:00 INFO  [project::lsp_store] language server 3: unregistered workspace/DidChangeWatchedFiles capability with id c566d772-bb46-44fb-b469-e609db16695d

In my setting file, basedpyright is the 3rd language server.

[amas127]

I am afraid not. I just rebuild zed from tag v208.6 and this "INFO" didn't stop basedpyright from working properly.

2025-10-23T22:08:55-04:00 INFO  [project::lsp_store] language server 3: unregistered workspace/DidChangeWatchedFiles capability with id c566d772-bb46-44fb-b469-e609db16695d

Apologies. A solution for me is to use "basedpyright<1.32.0". It just works.

---

Updated:

This works for me in the preview ver.

[flvrone]

Thanks for the tip!
So I have uninstalled my basedpyright tool like this:
uv tool uninstall basedpyright

And then installed it like this:
uv tool install 'basedpyright<1.32'

And now it works well.

[DetachHead]

this seems to only occur in zed 0.210.0-pre. basedpyright 1.32 contains no changes to the language server on our side, so this must be some sort of incompatibility between the latest pyright release (most likely the changes pulled from pylance in microsoft/pyright#11010) and a change in the latest zed prerelease.

can somebody confirm if the issue also occurs in pyright 1.1.407 but not 1.1.406?

[andrelopes-code]

this seems to only occur in zed 0.210.0-pre. basedpyright 1.32 contains no changes to the language server on our side, so this must be some sort of incompatibility between the latest pyright release (most likely the changes pulled from pylance in microsoft/pyright#11010) and a change in the latest zed prerelease.

can somebody confirm if the issue also occurs in pyright 1.1.407 but not 1.1.406?

I'm using zed 0.209.5 and the same error occurs to me. I correct the error but the diagnosis keeps showing up until I restart the LSP

[chbroecker]

I am also running Zed 0.209.5 and experienced the same problems with basedpyright 1.32.

Only downgrading seemed to help.

[DetachHead]

thanks for the info. i only compared versions 0.208.6 and 0.210.0-pre because they are the latest versions available on flathub.

i was able to confirm that the issue also occurs on pyright 1.1.407. still trying to figure out if the issue is is with the language server or zed's client