Jupyter Server breaks with extensions that depend on traitlets 4 #710

vwbusguy · 2022-03-08T20:12:53Z

Description

Traitlets v4 support was removed in #661. Unfortunately, the current code does not gracefully handle the existence of traitlets 4 and the server fails on startup. This can happen if extensions that depend on it are installed, such as nbgrader, which does not support traitlets v5.

Reproduce

From the jupyter base notebook container
Install nbgrader with conda
Enable the notebook/server extension
Attempt to start jupyter server

Attempted to add nbgrader to class lab container image from current Jupyter notebook base.

nbgrader was successfully installed and enabled without error. From here, I expected Jupyter to start as it normally does. If nothing else, the error should be handled more gracefully and preferably caught earlier on during enabling of the incompatible extension.

Context

Operating System and version: Ubuntu - jupyter/base-notebook:notebook-6.4.8 image
Browser and version: Never got far enough to talk to a browser
Jupyter Server version: jupyter/base-notebook:notebook-6.4.8
Relevant Python deps after installing Jupyter nbgrader:

Requirement already satisfied: traitlets in /opt/conda/lib/python3.9/site-packages (4.3.3)
Requirement already satisfied: six in /opt/conda/lib/python3.9/site-packages (from traitlets) (1.16.0)
Requirement already satisfied: ipython-genutils in /opt/conda/lib/python3.9/site-packages (from traitlets) (0.2.0)
Requirement already satisfied: decorator in /opt/conda/lib/python3.9/site-packages (from traitlets) (5.1.1)

Troubleshoot Output

CondaEnvException: Unable to determine environment

Please re-run this command with one of the following options:

Provide an environment name via --name or -n
Re-run this command inside an activated conda environment.

$PATH:
/opt/conda/bin
/usr/local/sbin
/usr/local/bin
/usr/sbin
/usr/bin
/sbin
/bin

sys.path:
/opt/conda/bin
/opt/conda/lib/python39.zip
/opt/conda/lib/python3.9
/opt/conda/lib/python3.9/lib-dynload
/opt/conda/lib/python3.9/site-packages

sys.executable:
/opt/conda/bin/python

sys.version:
3.9.10 | packaged by conda-forge | (main, Feb 1 2022, 21:24:11)
[GCC 9.4.0]

platform.platform():
Linux-4.18.0-348.12.2.el8_5.x86_64-x86_64-with-glibc2.31

which -a jupyter:
/opt/conda/bin/jupyter

pip list:
Package Version
----------------------------- ---------
alembic 1.7.6
anyio 3.5.0
argon2-cffi 21.3.0
argon2-cffi-bindings 21.2.0
asdf 2.7.2
astropy 5.0.1
asttokens 2.0.5
async-generator 1.10
attrs 21.4.0
Babel 2.9.1
backcall 0.2.0
backports.functools-lru-cache 1.6.4
black 22.1.0
bleach 4.1.0
blinker 1.4
Bottleneck 1.3.4
brotlipy 0.7.0
certifi 2021.10.8
certipy 0.1.3
cffi 1.15.0
charset-normalizer 2.0.12
click 8.0.4
cloudpickle 2.0.0
colorama 0.4.4
conda 4.11.0
conda-package-handling 1.7.3
coverage 6.3.2
cryptography 36.0.1
cycler 0.11.0
cytoolz 0.11.2
dask 2022.2.1
dataclasses 0.8
debugpy 1.5.1
decorator 5.1.1
defusedxml 0.7.1
entrypoints 0.4
executing 0.8.3
flit_core 3.7.1
fonttools 4.29.1
fsspec 2022.2.0
greenlet 1.1.2
gwcs 0.17.1
hypothesis 6.39.3
idna 3.3
imagecodecs 2022.2.22
imageio 2.16.1
importlib-metadata 4.11.2
importlib-resources 5.4.0
iniconfig 1.1.1
ipykernel 6.4.2
ipython 7.32.0
ipython-genutils 0.2.0
ipywidgets 7.6.5
jedi 0.18.1
Jinja2 3.0.3
joblib 1.1.0
json5 0.9.5
jsonschema 4.4.0
jupyter 1.0.0
jupyter-client 7.1.2
jupyter-console 6.4.3
jupyter-core 4.9.2
jupyter-server 1.13.2
jupyter-telemetry 0.1.0
jupyterhub 2.1.1
jupyterlab 3.2.9
jupyterlab-pygments 0.1.2
jupyterlab-server 2.10.3
jupyterlab-widgets 1.0.2
kiwisolver 1.3.2
libmambapy 0.22.1
locket 0.2.0
Mako 1.1.6
mamba 0.22.1
MarkupSafe 2.1.0
matplotlib 3.5.1
matplotlib-inline 0.1.3
mistune 0.8.4
munkres 1.1.4
mypy-extensions 0.4.3
nbclassic 0.3.5
nbclient 0.5.11
nbconvert 5.6.1
nbformat 5.1.3
nbgitpuller 1.0.2
nbgrader 0.6.2
nest-asyncio 1.5.4
networkx 2.7.1
notebook 6.4.8
numpy 1.22.2
oauthlib 3.2.0
packaging 21.3
pamela 1.0.0
pandas 1.4.1
pandocfilters 1.5.0
parso 0.8.3
partd 1.2.0
pathspec 0.9.0
pexpect 4.8.0
photutils 1.3.0
pickleshare 0.7.5
Pillow 9.0.1
pip 22.0.3
platformdirs 2.5.1
pluggy 1.0.0
prometheus-client 0.13.1
prompt-toolkit 3.0.27
psutil 5.9.0
ptyprocess 0.7.0
pure-eval 0.2.2
py 1.11.0
pycosat 0.6.3
pycparser 2.21
pycurl 7.44.1
pyerfa 2.0.0.1
Pygments 2.11.2
PyJWT 2.3.0
pyOpenSSL 22.0.0
pyparsing 3.0.7
PyQt5 5.12.3
PyQt5_sip 4.19.18
PyQtChart 5.12
PyQtWebEngine 5.12.1
pyrsistent 0.18.1
PySocks 1.7.1
pytest 7.0.1
pytest-arraydiff 0.3
pytest-astropy 0.9.0
pytest-astropy-header 0.1.2
pytest-cov 3.0.0
pytest-doctestplus 0.12.0
pytest-filter-subpackage 0.1.1
pytest-mock 3.7.0
pytest-openfiles 0.5.0
pytest-remotedata 0.3.3
python-dateutil 2.8.2
python-json-logger 2.0.1
pytz 2021.3
PyWavelets 1.2.0
PyYAML 6.0
pyzmq 22.3.0
qtconsole 5.2.2
QtPy 2.0.1
rapidfuzz 1.9.1
requests 2.27.1
ruamel.yaml 0.17.21
ruamel.yaml.clib 0.2.6
ruamel-yaml-conda 0.15.80
scikit-image 0.19.2
scikit-learn 1.0.2
scipy 1.8.0
semantic-version 2.9.0
Send2Trash 1.8.0
setuptools 60.9.3
six 1.16.0
sniffio 1.2.0
sortedcontainers 2.4.0
SQLAlchemy 1.3.23
stack-data 0.2.0
terminado 0.13.1
testpath 0.6.0
threadpoolctl 3.1.0
tifffile 2022.2.9
toml 0.10.2
tomli 2.0.1
toolz 0.11.2
tornado 6.1
tqdm 4.63.0
traitlets 5.0.5
typed-ast 1.5.2
typing_extensions 4.1.1
unicodedata2 14.0.0
urllib3 1.26.8
wcwidth 0.2.5
webencodings 0.5.1
websocket-client 1.3.1
wheel 0.37.1
widgetsnbextension 3.5.2
zipp 3.7.0

conda list:
# packages in environment at /opt/conda:
#
# Name Version Build Channel
_libgcc_mutex 0.1 conda_forge conda-forge
_openmp_mutex 4.5 1_gnu conda-forge
alembic 1.7.6 pyhd8ed1ab_0 conda-forge
alsa-lib 1.2.3 h516909a_0 conda-forge
anyio 3.5.0 py39hf3d152e_0 conda-forge
aom 3.3.0 h27087fc_1 conda-forge
argon2-cffi 21.3.0 pyhd8ed1ab_0 conda-forge
argon2-cffi-bindings 21.2.0 py39h3811e60_1 conda-forge
asdf 2.7.2 pyhd8ed1ab_0 conda-forge
astropy 5.0.1 py39hce5d2b2_0 conda-forge
asttokens 2.0.5 pyhd8ed1ab_0 conda-forge
async_generator 1.10 py_0 conda-forge
attrs 21.4.0 pyhd8ed1ab_0 conda-forge
babel 2.9.1 pyh44b312d_0 conda-forge
backcall 0.2.0 pyh9f0ad1d_0 conda-forge
backports 1.0 py_2 conda-forge
backports.functools_lru_cache 1.6.4 pyhd8ed1ab_0 conda-forge
black 22.1.0 pyhd8ed1ab_0 conda-forge
bleach 4.1.0 pyhd8ed1ab_0 conda-forge
blinker 1.4 py_1 conda-forge
blosc 1.21.0 h9c3ff4c_0 conda-forge
bottleneck 1.3.4 py39hd257fcd_0 conda-forge
brotli 1.0.9 h7f98852_6 conda-forge
brotli-bin 1.0.9 h7f98852_6 conda-forge
brotlipy 0.7.0 py39h3811e60_1003 conda-forge
brunsli 0.1 h9c3ff4c_0 conda-forge
bzip2 1.0.8 h7f98852_4 conda-forge
c-ares 1.18.1 h7f98852_0 conda-forge
c-blosc2 2.0.4 h5f21a17_1 conda-forge
ca-certificates 2021.10.8 ha878542_0 conda-forge
certifi 2021.10.8 py39hf3d152e_1 conda-forge
certipy 0.1.3 py_0 conda-forge
cffi 1.15.0 py39h4bc2ebd_0 conda-forge
cfitsio 4.0.0 h9a35b8e_0 conda-forge
charls 2.3.4 h9c3ff4c_0 conda-forge
charset-normalizer 2.0.12 pyhd8ed1ab_0 conda-forge
click 8.0.4 py39hf3d152e_0 conda-forge
cloudpickle 2.0.0 pyhd8ed1ab_0 conda-forge
colorama 0.4.4 pyh9f0ad1d_0 conda-forge
conda 4.11.0 py39hf3d152e_0 conda-forge
conda-package-handling 1.7.3 py39h3811e60_1 conda-forge
configurable-http-proxy 4.5.1 node17_h7e777a6_1 conda-forge
coverage 6.3.2 py39hb9d737c_1 conda-forge
cryptography 36.0.1 py39h95dcef6_0 conda-forge
cycler 0.11.0 pyhd8ed1ab_0 conda-forge
cytoolz 0.11.2 py39h3811e60_1 conda-forge
dask-core 2022.2.1 pyhd8ed1ab_0 conda-forge
dataclasses 0.8 pyhc8e2a94_3 conda-forge
dbus 1.13.6 h5008d03_3 conda-forge
debugpy 1.5.1 py39he80948d_0 conda-forge
decorator 5.1.1 pyhd8ed1ab_0 conda-forge
defusedxml 0.7.1 pyhd8ed1ab_0 conda-forge
entrypoints 0.4 pyhd8ed1ab_0 conda-forge
executing 0.8.3 pyhd8ed1ab_0 conda-forge
expat 2.4.6 h27087fc_0 conda-forge
flit-core 3.7.1 pyhd8ed1ab_0 conda-forge
font-ttf-dejavu-sans-mono 2.37 hab24e00_0 conda-forge
font-ttf-inconsolata 3.000 h77eed37_0 conda-forge
font-ttf-source-code-pro 2.038 h77eed37_0 conda-forge
font-ttf-ubuntu 0.83 hab24e00_0 conda-forge
fontconfig 2.13.96 ha180cfb_0 conda-forge
fonts-conda-ecosystem 1 0 conda-forge
fonts-conda-forge 1 0 conda-forge
fonttools 4.29.1 py39h3811e60_0 conda-forge
freetype 2.10.4 h0708190_1 conda-forge
fsspec 2022.2.0 pyhd8ed1ab_0 conda-forge
gettext 0.19.8.1 h73d1719_1008 conda-forge
giflib 5.2.1 h36c2ea0_2 conda-forge
greenlet 1.1.2 py39he80948d_1 conda-forge
gst-plugins-base 1.18.5 hf529b03_3 conda-forge
gstreamer 1.18.5 h9f60fe5_3 conda-forge
gwcs 0.17.1 pyhd8ed1ab_0 conda-forge
hypothesis 6.39.3 pyhd8ed1ab_0 conda-forge
icu 69.1 h9c3ff4c_0 conda-forge
idna 3.3 pyhd8ed1ab_0 conda-forge
imagecodecs 2022.2.22 py39hf577088_0 conda-forge
imageio 2.16.1 pyhcf75d05_0 conda-forge
importlib-metadata 4.11.2 py39hf3d152e_0 conda-forge
importlib_resources 5.4.0 pyhd8ed1ab_0 conda-forge
iniconfig 1.1.1 pyh9f0ad1d_0 conda-forge
ipykernel 6.4.2 py39hef51801_0 conda-forge
ipython 7.32.0 py39hf3d152e_0 conda-forge
ipython_genutils 0.2.0 py_1 conda-forge
ipywidgets 7.6.5 pyhd8ed1ab_0 conda-forge
jbig 2.1 h7f98852_2003 conda-forge
jedi 0.18.1 py39hf3d152e_0 conda-forge
jinja2 3.0.3 pyhd8ed1ab_0 conda-forge
joblib 1.1.0 pyhd8ed1ab_0 conda-forge
jpeg 9e h7f98852_0 conda-forge
json5 0.9.5 pyh9f0ad1d_0 conda-forge
jsonschema 4.4.0 pyhd8ed1ab_0 conda-forge
jupyter 1.0.0 py39hf3d152e_7 conda-forge
jupyter_client 7.1.2 pyhd8ed1ab_0 conda-forge
jupyter_console 6.4.3 pyhd8ed1ab_0 conda-forge
jupyter_core 4.9.2 py39hf3d152e_0 conda-forge
jupyter_server 1.13.2 pyhd8ed1ab_0 conda-forge
jupyter_telemetry 0.1.0 pyhd8ed1ab_1 conda-forge
jupyterhub 2.1.1 hd8ed1ab_0 conda-forge
jupyterhub-base 2.1.1 pyhd8ed1ab_0 conda-forge
jupyterlab 3.2.9 pyhd8ed1ab_0 conda-forge
jupyterlab_pygments 0.1.2 pyh9f0ad1d_0 conda-forge
jupyterlab_server 2.10.3 pyhd8ed1ab_0 conda-forge
jupyterlab_widgets 1.0.2 pyhd8ed1ab_0 conda-forge
jxrlib 1.1 h7f98852_2 conda-forge
keyutils 1.6.1 h166bdaf_0 conda-forge
kiwisolver 1.3.2 py39h1a9c180_1 conda-forge
krb5 1.19.2 h3790be6_4 conda-forge
lcms2 2.12 hddcbb42_0 conda-forge
ld_impl_linux-64 2.36.1 hea4e1c9_2 conda-forge
lerc 3.0 h9c3ff4c_0 conda-forge
libaec 1.0.6 h9c3ff4c_0 conda-forge
libarchive 3.5.2 hccf745f_1 conda-forge
libavif 0.9.3 h166bdaf_1 conda-forge
libblas 3.9.0 13_linux64_openblas conda-forge
libbrotlicommon 1.0.9 h7f98852_6 conda-forge
libbrotlidec 1.0.9 h7f98852_6 conda-forge
libbrotlienc 1.0.9 h7f98852_6 conda-forge
libcblas 3.9.0 13_linux64_openblas conda-forge
libclang 13.0.1 default_hc23dcda_0 conda-forge
libcurl 7.81.0 h2574ce0_0 conda-forge
libdeflate 1.10 h7f98852_0 conda-forge
libedit 3.1.20191231 he28a2e2_2 conda-forge
libev 4.33 h516909a_1 conda-forge
libevent 2.1.10 h9b69904_4 conda-forge
libffi 3.4.2 h7f98852_5 conda-forge
libgcc-ng 11.2.0 h1d223b6_12 conda-forge
libgfortran-ng 11.2.0 h69a702a_13 conda-forge
libgfortran5 11.2.0 h5c6108e_13 conda-forge
libglib 2.70.2 h174f98d_4 conda-forge
libgomp 11.2.0 h1d223b6_12 conda-forge
libiconv 1.16 h516909a_0 conda-forge
liblapack 3.9.0 13_linux64_openblas conda-forge
libllvm13 13.0.1 hf817b99_2 conda-forge
libmamba 0.22.1 h9c208ef_0 conda-forge
libmambapy 0.22.1 py39h3216e65_0 conda-forge
libnghttp2 1.47.0 h727a467_0 conda-forge
libnsl 2.0.0 h7f98852_0 conda-forge
libogg 1.3.4 h7f98852_1 conda-forge
libopenblas 0.3.18 pthreads_h8fe5266_0 conda-forge
libopus 1.3.1 h7f98852_1 conda-forge
libpng 1.6.37 h21135ba_2 conda-forge
libpq 14.2 hd57d9b9_0 conda-forge
libsodium 1.0.18 h36c2ea0_1 conda-forge
libsolv 0.7.19 h780b84a_5 conda-forge
libssh2 1.10.0 ha56f1ee_2 conda-forge
libstdcxx-ng 11.2.0 he4da1e4_12 conda-forge
libtiff 4.3.0 h542a066_3 conda-forge
libuuid 2.32.1 h7f98852_1000 conda-forge
libuv 1.43.0 h7f98852_0 conda-forge
libvorbis 1.3.7 h9c3ff4c_0 conda-forge
libwebp 1.2.2 h3452ae3_0 conda-forge
libwebp-base 1.2.2 h7f98852_1 conda-forge
libxcb 1.13 h7f98852_1004 conda-forge
libxkbcommon 1.0.3 he3ba5ed_0 conda-forge
libxml2 2.9.12 h885dcf4_1 conda-forge
libzlib 1.2.11 h36c2ea0_1013 conda-forge
libzopfli 1.0.3 h9c3ff4c_0 conda-forge
locket 0.2.0 py_2 conda-forge
lz4-c 1.9.3 h9c3ff4c_1 conda-forge
lzo 2.10 h516909a_1000 conda-forge
mako 1.1.6 pyhd8ed1ab_0 conda-forge
mamba 0.22.1 py39hfa8f2c8_0 conda-forge
markupsafe 2.1.0 py39hb9d737c_0 conda-forge
matplotlib 3.5.1 py39hf3d152e_0 conda-forge
matplotlib-base 3.5.1 py39h2fa2bec_0 conda-forge
matplotlib-inline 0.1.3 pyhd8ed1ab_0 conda-forge
mistune 0.8.4 py39h3811e60_1005 conda-forge
munkres 1.1.4 pyh9f0ad1d_0 conda-forge
mypy_extensions 0.4.3 py39hf3d152e_4 conda-forge
mysql-common 8.0.28 ha770c72_0 conda-forge
mysql-libs 8.0.28 hfa10184_0 conda-forge
nbclassic 0.3.5 pyhd8ed1ab_0 conda-forge
nbclient 0.5.11 pyhd8ed1ab_0 conda-forge
nbconvert 5.6.1 pyhd8ed1ab_2 conda-forge
nbformat 5.1.3 pyhd8ed1ab_0 conda-forge
nbgitpuller 1.0.2 pypi_0 pypi
nbgrader 0.6.2 py39hf3d152e_1 conda-forge
ncurses 6.3 h9c3ff4c_0 conda-forge
nest-asyncio 1.5.4 pyhd8ed1ab_0 conda-forge
networkx 2.7.1 pyhd8ed1ab_0 conda-forge
nodejs 17.4.0 h8ca31f7_0 conda-forge
notebook 6.4.8 pyha770c72_0 conda-forge
nspr 4.32 h9c3ff4c_1 conda-forge
nss 3.74 hb5efdd6_0 conda-forge
numpy 1.22.2 py39h91f2184_0 conda-forge
oauthlib 3.2.0 pyhd8ed1ab_0 conda-forge
openjpeg 2.4.0 hb52868f_1 conda-forge
openssl 1.1.1l h7f98852_0 conda-forge
packaging 21.3 pyhd8ed1ab_0 conda-forge
pamela 1.0.0 py_0 conda-forge
pandas 1.4.1 py39hde0f152_0 conda-forge
pandoc 2.17.1.1 ha770c72_0 conda-forge
pandocfilters 1.5.0 pyhd8ed1ab_0 conda-forge
parso 0.8.3 pyhd8ed1ab_0 conda-forge
partd 1.2.0 pyhd8ed1ab_0 conda-forge
pathspec 0.9.0 pyhd8ed1ab_0 conda-forge
pcre 8.45 h9c3ff4c_0 conda-forge
pexpect 4.8.0 pyh9f0ad1d_2 conda-forge
photutils 1.3.0 py39hce5d2b2_1 conda-forge
pickleshare 0.7.5 py_1003 conda-forge
pillow 9.0.1 py39hae2aec6_2 conda-forge
pip 22.0.3 pyhd8ed1ab_0 conda-forge
platformdirs 2.5.1 pyhd8ed1ab_0 conda-forge
pluggy 1.0.0 py39hf3d152e_2 conda-forge
prometheus_client 0.13.1 pyhd8ed1ab_0 conda-forge
prompt-toolkit 3.0.27 pyha770c72_0 conda-forge
prompt_toolkit 3.0.27 hd8ed1ab_0 conda-forge
psutil 5.9.0 py39h3811e60_0 conda-forge
pthread-stubs 0.4 h36c2ea0_1001 conda-forge
ptyprocess 0.7.0 pyhd3deb0d_0 conda-forge
pure_eval 0.2.2 pyhd8ed1ab_0 conda-forge
py 1.11.0 pyh6c4a22f_0 conda-forge
pybind11-abi 4 hd8ed1ab_3 conda-forge
pycosat 0.6.3 py39h3811e60_1009 conda-forge
pycparser 2.21 pyhd8ed1ab_0 conda-forge
pycurl 7.44.1 py39h72e3413_1 conda-forge
pyerfa 2.0.0.1 py39hce5d2b2_1 conda-forge
pygments 2.11.2 pyhd8ed1ab_0 conda-forge
pyjwt 2.3.0 pyhd8ed1ab_1 conda-forge
pyopenssl 22.0.0 pyhd8ed1ab_0 conda-forge
pyparsing 3.0.7 pyhd8ed1ab_0 conda-forge
pyqt 5.12.3 py39hf3d152e_8 conda-forge
pyqt-impl 5.12.3 py39hde8b62d_8 conda-forge
pyqt5-sip 4.19.18 py39he80948d_8 conda-forge
pyqtchart 5.12 py39h0fcd23e_8 conda-forge
pyqtwebengine 5.12.1 py39h0fcd23e_8 conda-forge
pyrsistent 0.18.1 py39h3811e60_0 conda-forge
pysocks 1.7.1 py39hf3d152e_4 conda-forge
pytest 7.0.1 py39hf3d152e_0 conda-forge
pytest-arraydiff 0.3 py_0 conda-forge
pytest-astropy 0.9.0 pyhd8ed1ab_0 conda-forge
pytest-astropy-header 0.1.2 py_0 conda-forge
pytest-cov 3.0.0 pyhd8ed1ab_0 conda-forge
pytest-doctestplus 0.12.0 pyhd8ed1ab_0 conda-forge
pytest-filter-subpackage 0.1.1 py_0 conda-forge
pytest-mock 3.7.0 pyhd8ed1ab_0 conda-forge
pytest-openfiles 0.5.0 py_0 conda-forge
pytest-remotedata 0.3.3 pyhd8ed1ab_0 conda-forge
python 3.9.10 h85951f9_2_cpython conda-forge
python-dateutil 2.8.2 pyhd8ed1ab_0 conda-forge
python-json-logger 2.0.1 pyh9f0ad1d_0 conda-forge
python_abi 3.9 2_cp39 conda-forge
pytz 2021.3 pyhd8ed1ab_0 conda-forge
pywavelets 1.2.0 py39hce5d2b2_1 conda-forge
pyyaml 6.0 py39h3811e60_3 conda-forge
pyzmq 22.3.0 py39h37b5a0c_1 conda-forge
qt 5.12.9 ha98a1a1_5 conda-forge
qtconsole 5.2.2 pyhd8ed1ab_1 conda-forge
qtconsole-base 5.2.2 pyhd8ed1ab_1 conda-forge
qtpy 2.0.1 pyhd8ed1ab_0 conda-forge
rapidfuzz 1.9.1 py39hde0f152_0 conda-forge
readline 8.1 h46c0cb4_0 conda-forge
reproc 14.2.3 h7f98852_0 conda-forge
reproc-cpp 14.2.3 h9c3ff4c_0 conda-forge
requests 2.27.1 pyhd8ed1ab_0 conda-forge
ruamel.yaml 0.17.21 py39h3811e60_0 conda-forge
ruamel.yaml.clib 0.2.6 py39h3811e60_0 conda-forge
ruamel_yaml 0.15.80 py39h3811e60_1006 conda-forge
scikit-image 0.19.2 py39hde0f152_0 conda-forge
scikit-learn 1.0.2 py39h4dfa638_0 conda-forge
scipy 1.8.0 py39hee8e79c_1 conda-forge
semantic_version 2.9.0 pyhd8ed1ab_0 conda-forge
send2trash 1.8.0 pyhd8ed1ab_0 conda-forge
setuptools 60.9.3 py39hf3d152e_0 conda-forge
six 1.16.0 pyh6c4a22f_0 conda-forge
snappy 1.1.8 he1b5a44_3 conda-forge
sniffio 1.2.0 py39hf3d152e_2 conda-forge
sortedcontainers 2.4.0 pyhd8ed1ab_0 conda-forge
sqlalchemy 1.3.23 py39h3811e60_0 conda-forge
sqlite 3.37.0 h9cd32fc_0 conda-forge
stack_data 0.2.0 pyhd8ed1ab_0 conda-forge
terminado 0.13.1 py39hf3d152e_0 conda-forge
testpath 0.6.0 pyhd8ed1ab_0 conda-forge
threadpoolctl 3.1.0 pyh8a188c0_0 conda-forge
tifffile 2022.2.9 pyhd8ed1ab_0 conda-forge
tk 8.6.12 h27826a3_0 conda-forge
toml 0.10.2 pyhd8ed1ab_0 conda-forge
tomli 2.0.1 pyhd8ed1ab_0 conda-forge
toolz 0.11.2 pyhd8ed1ab_0 conda-forge
tornado 6.1 py39h3811e60_2 conda-forge
tqdm 4.63.0 pyhd8ed1ab_0 conda-forge
traitlets 5.0.5 pypi_0 pypi
typed-ast 1.5.2 py39h3811e60_0 conda-forge
typing_extensions 4.1.1 pyha770c72_0 conda-forge
tzdata 2021e he74cb21_0 conda-forge
unicodedata2 14.0.0 py39h3811e60_0 conda-forge
urllib3 1.26.8 pyhd8ed1ab_1 conda-forge
wcwidth 0.2.5 pyh9f0ad1d_2 conda-forge
webencodings 0.5.1 py_1 conda-forge
websocket-client 1.3.1 pyhd8ed1ab_0 conda-forge
wheel 0.37.1 pyhd8ed1ab_0 conda-forge
widgetsnbextension 3.5.2 py39hf3d152e_1 conda-forge
xorg-libxau 1.0.9 h7f98852_0 conda-forge
xorg-libxdmcp 1.1.3 h7f98852_0 conda-forge
xz 5.2.5 h516909a_1 conda-forge
yaml 0.2.5 h7f98852_2 conda-forge
yaml-cpp 0.6.3 he1b5a44_4 conda-forge
zeromq 4.3.4 h9c3ff4c_1 conda-forge
zfp 0.5.5 h9c3ff4c_8 conda-forge
zipp 3.7.0 pyhd8ed1ab_1 conda-forge
zlib 1.2.11 h36c2ea0_1013 conda-forge
zstd 1.5.2 ha95c52a_0 conda-forge

Command Line Output

Jupyter never starts.  Here's the trace:
Traceback (most recent call last):
  File "/opt/conda/bin/jupyter-lab", line 6, in 
    from jupyterlab.labapp import main
  File "/opt/conda/lib/python3.9/site-packages/jupyterlab/labapp.py", line 15, in 
    from jupyter_server.serverapp import flags
  File "/opt/conda/lib/python3.9/site-packages/jupyter_server/serverapp.py", line 83, in 
    from jupyter_server.services.sessions.sessionmanager import SessionManager
  File "/opt/conda/lib/python3.9/site-packages/jupyter_server/services/sessions/sessionmanager.py", line 22, in 
    from jupyter_server.traittypes import InstanceFromClasses
  File "/opt/conda/lib/python3.9/site-packages/jupyter_server/traittypes.py", line 7, in 
    from traitlets.utils.descriptions import describe
ModuleNotFoundError: No module named 'traitlets.utils.descriptions'

Browser Output

n/a

welcome · 2022-03-08T20:12:55Z

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davidbrochart · 2022-03-08T20:33:37Z

Thanks for reporting @vwbusguy.
Indeed it seems that traitlets>=5 was required from v1.13.3, and you have v1.13.2. Upgrading should fix it, but you won't be able to install nbgrader.

davidbrochart · 2022-03-08T20:43:26Z

I don't have your exact environment, but I managed to install jupyter_server=1.13.2 and nbgrader with conda, and jupyter notebook starts without error.

vwbusguy · 2022-03-08T22:03:25Z

I'm using the Jupyter docker image: jupyter/base-notebook:notebook-6.4.8 .

Make sure the extension is also enabled:

jupyter nbextension install --sys-prefix --py nbgrader --overwrite
jupyter nbextension enable --sys-prefix --py nbgrader
jupyter serverextension enable --sys-prefix --py nbgrader

blink1073 · 2022-03-10T20:11:36Z

This is coming from the conda-forge recipe being out of sync with the dependencies. I'm working on making a fix now.

blink1073 · 2022-03-10T21:15:33Z

I merged the fix, it will take a while for the files to get to anaconda.org. conda-forge/nbgrader-feedstock#48

vwbusguy · 2022-03-28T18:39:38Z

It looks like hide-code is another one I found today that triggers this, as well: https://github.com/kirbs-/hide_code/issues/98 . In that case, it was installed through pip and not conda-forge, FWIW.

blink1073 · 2023-01-05T16:39:51Z

Closing as fixed, since kirbs-/hide_code/issues/98 is closed as well.

vwbusguy added the bug label Mar 8, 2022

vwbusguy mentioned this issue Mar 28, 2022

Traitlets too old for Jupyter Server kirbs-/hide_code#98

Closed

blink1073 closed this as completed Jan 5, 2023

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Jupyter Server breaks with extensions that depend on traitlets 4 #710

Jupyter Server breaks with extensions that depend on traitlets 4 #710

vwbusguy commented Mar 8, 2022 •

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blink1073 commented Jan 5, 2023

Jupyter Server breaks with extensions that depend on traitlets 4 #710

Jupyter Server breaks with extensions that depend on traitlets 4 #710

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