Q: pylsp can't find installed editable packages

The problem is fairly straightforward: pylsp can't deal with editable packages. To create an environment that reproduces my problem:

$ mkdir /tmp/pyslp_test
$ cd /tmp/pylsp_test
$ echo "import jaxtyping" > script.py
$ mkdir editable_packages
$ git clone https://github.com/google/jaxtyping editable_packages/jaxtyping
$ pip3 install -e editable_packages/jaxtyping/
$ python3 -c 'import jaxtyping; print(jaxtyping.__path__)'
['/private/tmp/pylsp_test/editable_packages/jaxtyping/jaxtyping']

I open script.py from my editor and try to jump to the definition with my cursor on jaxtyping, but it claims it can't find the definition even though python is demonstrably aware of the package.

the relevant parts of my editor log:

[Trace - 04:05:16 PM] Sending request 'initialize - (2148)'.
Params: {
  "processId": null,
  "rootPath": "/tmp",
  "clientInfo": {
    "name": "emacs",
    "version": "GNU Emacs 28.2 (build 1, aarch64-apple-darwin21.1.0, NS appkit-2113.00 Version 12.0.1 (Build 21A559))\n of 2022-09-12"
  },
  "rootUri": "file:///tmp",
  "capabilities": {
    "workspace": {
      "workspaceEdit": {
        "documentChanges": true,
        "resourceOperations": [
          "create",
          "rename",
          "delete"
        ]
      },
      "applyEdit": true,
      "symbol": {
        "symbolKind": {
          "valueSet": [
            1,
            2,
            3,
            4,
            5,
            6,
            7,
            8,
            9,
            10,
            11,
            12,
            13,
            14,
            15,
            16,
            17,
            18,
            19,
            20,
            21,
            22,
            23,
            24,
            25,
            26
          ]
        }
      },
      "executeCommand": {
        "dynamicRegistration": false
      },
      "didChangeWatchedFiles": {
        "dynamicRegistration": true
      },
      "workspaceFolders": true,
      "configuration": true,
      "fileOperations": {
        "didCreate": false,
        "willCreate": false,
        "didRename": false,
        "willRename": false,
        "didDelete": false,
        "willDelete": false
      }
    },
    "textDocument": {
      "declaration": {
        "linkSupport": true
      },
      "definition": {
        "linkSupport": true
      },
      "implementation": {
        "linkSupport": true
      },
      "typeDefinition": {
        "linkSupport": true
      },
      "synchronization": {
        "willSave": true,
        "didSave": true,
        "willSaveWaitUntil": true
      },
      "documentSymbol": {
        "symbolKind": {
          "valueSet": [
            1,
            2,
            3,
            4,
            5,
            6,
            7,
            8,
            9,
            10,
            11,
            12,
            13,
            14,
            15,
            16,
            17,
            18,
            19,
            20,
            21,
            22,
            23,
            24,
            25,
            26
          ]
        },
        "hierarchicalDocumentSymbolSupport": true
      },
      "formatting": {
        "dynamicRegistration": true
      },
      "rangeFormatting": {
        "dynamicRegistration": true
      },
      "rename": {
        "dynamicRegistration": true,
        "prepareSupport": true
      },
      "codeAction": {
        "dynamicRegistration": true,
        "isPreferredSupport": true,
        "codeActionLiteralSupport": {
          "codeActionKind": {
            "valueSet": [
              "",
              "quickfix",
              "refactor",
              "refactor.extract",
              "refactor.inline",
              "refactor.rewrite",
              "source",
              "source.organizeImports"
            ]
          }
        },
        "resolveSupport": {
          "properties": [
            "edit",
            "command"
          ]
        },
        "dataSupport": true
      },
      "completion": {
        "completionItem": {
          "snippetSupport": false,
          "documentationFormat": [
            "markdown",
            "plaintext"
          ],
          "resolveAdditionalTextEditsSupport": true,
          "insertReplaceSupport": true,
          "deprecatedSupport": true,
          "resolveSupport": {
            "properties": [
              "documentation",
              "details",
              "additionalTextEdits",
              "command"
            ]
          },
          "insertTextModeSupport": {
            "valueSet": [
              1,
              2
            ]
          }
        },
        "contextSupport": true
      },
      "signatureHelp": {
        "signatureInformation": {
          "parameterInformation": {
            "labelOffsetSupport": true
          }
        }
      },
      "documentLink": {
        "dynamicRegistration": true,
        "tooltipSupport": true
      },
      "hover": {
        "contentFormat": [
          "markdown",
          "plaintext"
        ]
      },
      "foldingRange": null,
      "callHierarchy": {
        "dynamicRegistration": false
      },
      "publishDiagnostics": {
        "relatedInformation": true,
        "tagSupport": {
          "valueSet": [
            1,
            2
          ]
        },
        "versionSupport": true
      },
      "linkedEditingRange": {
        "dynamicRegistration": true
      }
    },
    "window": {
      "workDoneProgress": true,
      "showMessage": null,
      "showDocument": {
        "support": true
      }
    }
  },
  "initializationOptions": null,
  "workDoneToken": "1"
}

[Trace - 04:05:16 PM] Received response 'initialize - (2148)' in 747ms.
Result: {
  "capabilities": {
    "codeActionProvider": true,
    "codeLensProvider": {
      "resolveProvider": null
    },
    "completionProvider": {
      "resolveProvider": true,
      "triggerCharacters": [
        "."
      ]
    },
    "documentFormattingProvider": true,
    "documentHighlightProvider": true,
    "documentRangeFormattingProvider": true,
    "documentSymbolProvider": true,
    "definitionProvider": true,
    "executeCommandProvider": {
      "commands": []
    },
    "hoverProvider": true,
    "referencesProvider": true,
    "renameProvider": true,
    "foldingRangeProvider": true,
    "signatureHelpProvider": {
      "triggerCharacters": [
        "(",
        ",",
        "="
      ]
    },
    "textDocumentSync": {
      "change": 2,
      "save": {
        "includeText": true
      },
      "openClose": true
    },
    "workspace": {
      "workspaceFolders": {
        "supported": true,
        "changeNotifications": true
      }
    },
    "experimental": {}
  },
  "serverInfo": {
    "name": "pylsp",
    "version": "1.4.1"
  }
}

[Trace - 04:05:16 PM] Sending notification 'initialized'.
Params: {}

[Trace - 04:05:16 PM] Sending notification 'workspace/didChangeConfiguration'.
Params: {
  "settings": {
    "pylsp": {
      "plugins": {
        "rope_rename": {
          "enabled": false
        },
        "autopep8": {
          "enabled": false
        },
        "yapf": {
          "enabled": false
        },
        "rope_completion": {
          "enabled": false
        },
        "pyflakes": {
          "enabled": false
        },
        "pydocstyle": {
          "matchDir": "[^\\.].*",
          "match": "(?!test_).*\\.py",
          "enabled": true
        },
        "pycodestyle": {
          "hangClosing": false,
          "enabled": false
        },
        "pylint": {
          "enabled": false,
          "args": []
        },
        "flake8": {
          "enabled": true
        },
        "preload": {
          "enabled": true
        },
        "mccabe": {
          "threshold": 15,
          "enabled": true
        },
        "jedi_symbols": {
          "all_scopes": true,
          "enabled": true
        },
        "jedi_signature_help": {
          "enabled": true
        },
        "jedi_references": {
          "enabled": true
        },
        "jedi_hover": {
          "enabled": true
        },
        "jedi_definition": {
          "follow_builtin_imports": true,
          "follow_imports": true,
          "enabled": true
        },
        "jedi_completion": {
          "include_params": true,
          "enabled": true,
          "include_class_objects": true,
          "fuzzy": false
        },
        "jedi_rename": {
          "enabled": true
        }
      },
      "configurationSources": [
        "flake8"
      ]
    }
  }
}

[Trace - 04:05:16 PM] Sending notification 'textDocument/didOpen'.
Params: {
  "textDocument": {
    "uri": "file:///tmp/pylsp_test/script.py",
    "languageId": "python",
    "version": 19,
    "text": "import jaxtyping\n"
  }
}

...

[Trace - 04:05:44 PM] Sending request 'textDocument/definition - (2154)'.
Params: {
  "textDocument": {
    "uri": "file:///tmp/pylsp_test/script.py"
  },
  "position": {
    "line": 0,
    "character": 15
  }
}

[Trace - 04:05:44 PM] Received response 'textDocument/definition - (2154)' in 7ms.
Result: []

I haven't used python in many years, so I don't know much about pylsp but this seems like a very trivial use case, so I am inclined to believe that it is not a bug but an error on my part. That said, I went through the docs and couldn't find anything that relates to my problem.

python-lsp / python-lsp-server

Q: pylsp can't find installed editable packages #361