anakin-language-server
Yet another Jedi Python language server
Requirements
- Python >= 3.6
- pygls >= 1.1, <1.2
- Jedi >= 0.19
- pyflakes ~= 2.2
- pycodestyle ~= 2.5
- yapf ~=0.30
Optional requirements
- mypy
Implemented features
textDocument/completiontextDocument/hovertextDocument/signatureHelptextDocument/definitiontextDocument/referencestextDocument/publishDiagnosticstextDocument/documentSymbol-
textDocument/codeAction(Inline variable) textDocument/formattingtextDocument/rangeFormattingtextDocument/renametextDocument/documentHighlight
Initialization option
-
venv- path to virtualenv. This option will be passed to Jedi's create_environment.
Also one can set VIRTUAL_ENV or CONDA_PREFIX before running anakinls so Jedi will find proper environment. See get_default_environment.
Diagnostics
Diagnostics are published on document open and save.
Diagnostics providers:
-
Jedi
See get_syntax_errors.
-
pyflakes
-
pycodestyle
Server restart is needed after changing one of the configuration files.
-
mypy
Install
mypyin the same environment asanakinlsand setmypy_enabledconfiguration option.
Configuration options
Configuration options must be passed under anakinls key in workspace/didChangeConfiguration notification.
Available options:
| Option | Description | Default |
|---|---|---|
help_on_hover |
Use help instead of infer for textDocument/hover. |
True |
completion_snippet_first |
Tweak sortText property so snippet completion appear before plain completion. |
False |
completion_fuzzy |
Value of the fuzzy parameter for complete. |
False |
diagnostic_on_open |
Publish diagnostics on textDocument/didOpen
|
True |
diagnostic_on_change |
Publish diagnostics on textDocument/didChange
|
False |
diagnostic_on_save |
Publish diagnostics on textDocument/didSave
|
True |
pyflakes_errors |
Diagnostic severity will be set to Error if Pyflakes message class name is in this list. See Pyflakes messages. |
['UndefinedName'] |
pycodestyle_config |
In addition to project and user level config, specify pycodestyle config file. Same as --config option for pycodestyle. |
None |
mypy_enabled |
Use mypy to provide diagnostics. |
False |
yapf_style_config |
Either a style name or a path to a file that contains formatting style settings. | 'pep8' |
jedi_settings |
Global Jedi settings. E.g. set it to {"case_insensitive_completion": False} to turn off case insensitive completion |
{} |
Configuration example
Here is eglot configuration:
(defvar my/lsp-venv nil
"Name of virtualenv.
Set it in project's dir-locals file.")
(defclass my/eglot-anakinls (eglot-lsp-server) ()
:documentation
"Own eglot server class.")
(cl-defmethod eglot-initialization-options ((_server my/eglot-anakinls))
"Pass initialization param to anakinls."
`(:venv ,(when my/lsp-venv
(expand-file-name
(concat "~/.virtualenvs/" my/lsp-venv)))))
;; Add this server to eglot programs to handle python-mode and run `anakinls'
(add-to-list 'eglot-server-programs
'(python-mode my/eglot-anakinls "anakinls"))
;; Also treat UnusedVariable as error
(setq-default eglot-workspace-configuration
'((:anakinls :pyflakes_errors ["UndefinedName" "UnusedVariable"])))
Installation
pip install anakin-language-server
Development
pip install pre-commit
pre-commit install
