dcervenkov
commented
3 years ago A minute after I submitted the issue, I solved it. Oh well, maybe this will help someone in the future.
I used pip install python-language-server. Doing pip install "python-language-server[all]" (as the documentation says) fixed the problem.
Description
JupyterLab fails to find the LSP server extension. The status line shows "Server extension missing".
Quite a few similar issues have been reported before, but the users seem to use various combinations of conda, JupyterHub, and Docker. My setup is very simple in comparison - just plain Python, everything installed via pip.
Reproduce
Not sure if I should be using
jupyter server extensionorjupyter serverextension- I tried both to no avail.Expected behavior
Server extension is found and
jupyter_lspworks.Context
Required: installed server extensions
❯ jupyter server extension list Config dir: /home/dc/.jupyter jupyterlab_lsp enabled - Validating jupyterlab_lsp... jupyterlab_lsp 3.3.0 OK Config dir: /usr/etc/jupyter Config dir: /usr/local/etc/jupyter ❯ jupyter serverextension list config dir: /home/dc/.jupyter jupyter_lsp enabled - Validating... jupyter_lsp 1.1.2 OKRequired: installed lab extensions
❯ jupyter lab extension list Config dir: /home/dc/.jupyter jupyterlab_lsp enabled - Validating jupyterlab_lsp... jupyterlab_lsp 3.3.0 OK Config dir: /usr/etc/jupyter Config dir: /usr/local/etc/jupyter ❯ jupyter labextension list JupyterLab v3.0.7 /home/dc/.local/share/jupyter/labextensions @krassowski/jupyterlab-lsp v3.3.0 enabled OK (python, jupyterlab_lsp)Troubleshoot Output
❯ jupyter troubleshoot $PATH: /opt/root6/bin /home/dc/.local/bin /home/dc/bin /usr/lib/lightdm/lightdm /usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin /usr/games /snap/bin /home/dc/.fzf/bin sys.path: /home/dc/.local/bin /opt/root6/lib /usr/lib/python36.zip /usr/lib/python3.6 /usr/lib/python3.6/lib-dynload /home/dc/.local/lib/python3.6/site-packages /usr/local/lib/python3.6/dist-packages /usr/lib/python3/dist-packages sys.executable: /usr/bin/python3 sys.version: 3.6.9 (default, Oct 8 2020, 12:12:24) [GCC 8.4.0] platform.platform(): Linux-5.4.0-65-generic-x86_64-with-elementary-5.1.7-hera which -a jupyter: /home/dc/.local/bin/jupyter pip list: Package Version --------------------------------- ------------------------------------------ Amby 1.3 anyio 2.0.2 apipkg 1.5 appdirs 1.4.4 argon2-cffi 20.1.0 asn1crypto 0.24.0 astroid 2.4.2 async-generator 1.10 attrs 19.3.0 awkward1 0.4.5 Babel 2.9.0 backcall 0.2.0 black 19.10b0 bleach 3.1.5 boost-histogram 0.11.1 Brlapi 0.6.6 cachetools 4.1.1 certifi 2020.11.8 cffi 1.14.1 chardet 3.0.4 click 7.1.1 cmake 3.18.4.post1 command-not-found 0.3 ConfigArgParse 1.0 contextvars 2.4 coverage 5.3 cryptography 2.1.4 cycler 0.10.0 dataclasses 0.8 datrie 0.8 decorator 4.4.2 defer 1.0.6 defusedxml 0.6.0 distlib 0.3.1 distro-info 0.18ubuntu0.18.04.1 docutils 0.16 entrypoints 0.3 execnet 1.7.1 filelock 3.0.12 flake8 3.8.4 fonttools 4.13.0 gcalcli 4.3.0 gitdb 4.0.2 GitPython 3.1.0 google-api-core 1.23.0 google-api-python-client 1.12.5 google-auth 1.23.0 google-auth-httplib2 0.0.4 googleapis-common-protos 1.52.0 greenlet 0.4.15 hist 2.0.1 histoprint 1.5.2 html5lib 0.999999999 httplib2 0.18.1 idna 2.10 immutables 0.14 importlib-metadata 2.0.0 importlib-resources 3.3.0 iniconfig 1.1.1 iotop 0.6 ipykernel 5.3.4 ipympl 0.5.7 ipython 7.16.1 ipython-genutils 0.2.0 ipywidgets 7.5.1 isort 5.4.2 jedi 0.17.2 Jinja2 2.11.2 json5 0.9.5 jsonschema 3.2.0 jupyter-client 6.1.11 jupyter-contrib-core 0.3.3 jupyter-contrib-nbextensions 0.5.1 jupyter-core 4.7.1 jupyter-highlight-selected-word 0.2.0 jupyter-latex-envs 1.4.6 jupyter-lsp 1.1.2 jupyter-nbextensions-configurator 0.4.1 jupyter-server 1.3.0 jupyterlab 3.0.7 jupyterlab-lsp 3.3.0 jupyterlab-server 2.2.0 keyring 10.6.0 keyrings.alt 3.0 kiwisolver 1.2.0 language-selector 0.1 lazy-object-proxy 1.4.3 line-profiler 3.1.0 logzero 1.6.3 louis 3.5.0 lxml 4.5.2 MarkupSafe 1.1.1 matplotlib 3.3.1 mccabe 0.6.1 mistune 0.8.4 mplhep 0.2.12 msgpack 1.0.0 mypy 0.790 mypy-extensions 0.4.3 nbclassic 0.2.6 nbconvert 5.6.1 nbformat 5.0.7 neovim 0.2.6 netifaces 0.10.4 notebook 6.1.3 numpy 1.19.1 oauth2client 4.1.3 olefile 0.45.1 onboard 1.4.1 packaging 20.4 pandas 1.0.5 pandocfilters 1.4.2 parsedatetime 2.6 parso 0.7.1 pathspec 0.7.0 patsy 0.5.1 pexpect 4.8.0 pickleshare 0.7.5 Pillow 7.2.0 pip 20.3.3 pipenv 2020.11.15 pluggy 0.13.1 pocket 0.3.6 prometheus-client 0.8.0 prompt-toolkit 3.0.6 protobuf 3.13.0 psutil 5.7.2 ptyprocess 0.6.0 py 1.9.0 pyasn1 0.4.8 pyasn1-modules 0.2.8 pycairo 1.16.2 pycodestyle 2.6.0 pycparser 2.20 pycrypto 2.6.1 pydocstyle 2.0.0 pyflakes 2.2.0 Pygments 2.6.1 pygobject 3.26.1 pyinotify 0.9.6 pylint 2.6.0 pynvim 0.4.2 pyparsing 2.4.7 PyQt5 5.13.2 PyQt5-sip 12.7.0 PyQtWebEngine 5.13.1 pyrsistent 0.16.0 pytest 6.1.2 pytest-cov 2.10.1 pytest-forked 1.3.0 pytest-xdist 2.1.0 python-apt 1.6.5-ubuntu0.5-elementary17-ubuntu5.1.7.1 python-dateutil 2.8.1 python-debian 0.1.32 python-distutils-extra 2.39 python-jsonrpc-server 0.4.0 python-language-server 0.36.2 python-Levenshtein 0.12.0 pytz 2020.4 pyxattr 0.6.0 pyxdg 0.25 PyYAML 5.3.1 pyzmq 19.0.2 qhue 1.0.12 ratelimiter 1.2.0.post0 regex 2020.2.20 reportlab 3.4.0 requests 2.24.0 requests-unixsocket 0.1.5 rgbxy 0.5 root-numpy 4.8.0 root-pandas 0.7.0 rootpy 1.0.1 rope 0.16.0 rsa 4.6 scipy 1.5.1 screen-resolution-extra 0.0.0 seaborn 0.9.0 SecretStorage 2.3.1 Send2Trash 1.5.0 setuptools 50.3.2 simplegeneric 0.8.1 six 1.15.0 smmap 3.0.1 snakemake 5.10.0 sniffio 1.2.0 snowballstemmer 1.2.1 ssh-import-id 5.7 statsmodels 0.11.1 systemd-python 234 terminado 0.8.3 testpath 0.4.4 toml 0.10.0 toposort 1.5 tornado 6.1 tqdm 4.54.0 traitlets 4.3.3 typed-ast 1.4.1 typing-extensions 3.7.4.3 ubuntu-drivers-common 0.0.0 ufw 0.36 ujson 4.0.2 ulauncher 5.9.0 uncertainties 3.1.2 uproot 4.0.0 uproot-methods 0.7.4 uproot4 0.1.2 uritemplate 3.0.1 urllib3 1.25.11 usb-creator 0.3.3 virtualenv 20.2.1 virtualenv-clone 0.5.4 vobject 0.9.6.1 wcwidth 0.2.5 webencodings 0.5.1 websocket-client 0.44.0 wheel 0.30.0 widgetsnbextension 3.5.1 wrapt 1.12.0 xkit 0.0.0 xrootd 5.0.3- youtube-dl 2020.12.5 zipp 3.4.0Command Line Output
[log.txt](https://github.com/krassowski/jupyterlab-lsp/files/5932154/log.txt)