pylsp-tramp connected successfully, but no completion or checking

[zhenhua-wang]

pylsp works very well locally. However, on a remote server, although it can be connected successfully, there is no completion or checking available, and the stderr buffer is empty. Surprisingly, after install lsp-pyright, both pyright and pylsp work again remotely...

I wonder if there is any essential config from lsp-pyright that is missing in lsp-mode?

[yyoncho]

It is hard to tell with that much information. Are other features working?

[zhenhua-wang]

No, it turns out pylsp-tramp is only connected, but not initialized successfully. Both the pylsp-tramp and pylsp-tramp-stderr buffers are empty. lsp-log has the following output:

Found the following clients for /ssh:[email protected]#2222:/home/zhenhua/Documents/test.py: (server-id pylsp-tramp, priority -1)
The following clients were selected based on priority: (server-id pylsp-tramp, priority -1)

Here is my config for lsp-mode, although I don't think they are relevant. I've also tried lsp-mode for R, which works great both locally and remotely. So I think this should be an issue with pylsp-tramp...

  (setq lsp-auto-guess-root t
        lsp-keep-workspace-alive nil
        lsp-keymap-prefix nil
        ;; modeline
        lsp-modeline-code-actions-enable nil
        lsp-modeline-diagnostics-enable nil
        lsp-modeline-workspace-status-enable nil
        lsp-headerline-breadcrumb-enable nil
        ;; doc
        lsp-eldoc-enable-hover nil
        lsp-signature-auto-activate nil
        lsp-signature-render-documentation nil
        ;; others
        lsp-enable-folding nil
        lsp-completion-provider :none
        lsp-enable-indentation nil
        lsp-enable-on-type-formatting nil
        lsp-diagnostics-disabled-modes '(markdown-mode gfm-mode)
        lsp-enable-file-watchers nil
        lsp-enable-text-document-color nil)

[zhenhua-wang]

I forgot to mention that I also tried eglot with pylsp on tramp, and it works out of box. So, I think my pylsp is properly configured on my server.

[yyoncho]

When you enable the logging what do you see? lsp-toggle-trace-io + lsp-workspace-show-log

[zhenhua-wang]

Thank you for your time to answer. This is what I observe in lsp-workspace-show-log.

[Trace - 12:08:17 PM] Sending request 'initialize - (89)'.
Params: {
  "processId": null,
  "rootPath": "/home/zhenhua/Documents",
  "clientInfo": {
    "name": "emacs",
    "version": "GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.39, cairo version 1.18.0)\n of 2024-01-16"
  },
  "rootUri": "file:///home/zhenhua/Documents",
  "capabilities": {
    "general": {
      "positionEncodings": [
        "utf-32",
        "utf-16"
      ]
    },
    "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
      },
      "workspaceFolders": true,
      "configuration": true,
      "codeLens": {
        "refreshSupport": true
      },
      "fileOperations": {
        "didCreate": false,
        "willCreate": false,
        "didRename": true,
        "willRename": true,
        "didDelete": false,
        "willDelete": false
      }
    },
    "textDocument": {
      "declaration": {
        "dynamicRegistration": true,
        "linkSupport": true
      },
      "definition": {
        "dynamicRegistration": true,
        "linkSupport": true
      },
      "references": {
        "dynamicRegistration": true
      },
      "implementation": {
        "dynamicRegistration": true,
        "linkSupport": true
      },
      "typeDefinition": {
        "dynamicRegistration": true,
        "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
      },
      "onTypeFormatting": {
        "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": true,
          "documentationFormat": [
            "markdown",
            "plaintext"
          ],
          "resolveAdditionalTextEditsSupport": true,
          "insertReplaceSupport": true,
          "deprecatedSupport": true,
          "resolveSupport": {
            "properties": [
              "documentation",
              "detail",
              "additionalTextEdits",
              "command"
            ]
          },
          "insertTextModeSupport": {
            "valueSet": [
              1,
              2
            ]
          }
        },
        "contextSupport": true,
        "dynamicRegistration": true
      },
      "signatureHelp": {
        "signatureInformation": {
          "parameterInformation": {
            "labelOffsetSupport": true
          }
        },
        "dynamicRegistration": true
      },
      "documentLink": {
        "dynamicRegistration": true,
        "tooltipSupport": true
      },
      "hover": {
        "contentFormat": [
          "markdown",
          "plaintext"
        ],
        "dynamicRegistration": true
      },
      "selectionRange": {
        "dynamicRegistration": true
      },
      "callHierarchy": {
        "dynamicRegistration": false
      },
      "typeHierarchy": {
        "dynamicRegistration": true
      },
      "publishDiagnostics": {
        "relatedInformation": true,
        "tagSupport": {
          "valueSet": [
            1,
            2
          ]
        },
        "versionSupport": true
      },
      "linkedEditingRange": {
        "dynamicRegistration": true
      }
    },
    "window": {
      "workDoneProgress": true,
      "showDocument": {
        "support": true
      }
    }
  },
  "initializationOptions": null,
  "workDoneToken": "1"
}