ImportError from PySide6 #2459
Description
Bug description
I am attempting to install version 1.5.2 in Linux environment Debian 6.1.148-1 using the conda/pip combo as follows:
conda create -n sleap_1_5_2 python=3.13 -y
conda activate sleap_1_5_2
# CUDA 12.8
pip install "sleap[nn]" --extra-index-url https://download.pytorch.org/whl/cu128 --index-url https://pypi.org/simple
Expected behaviour
I would expect sleap-label --help to produce the help list.
Actual behaviour
Instead, it gives this error:
Traceback (most recent call last):
File "/home/lkeyes/miniconda3/envs/sleap_1_5_2/bin/sleap-label", line 3, in <module>
from sleap.gui.app import main
File "/home/lkeyes/miniconda3/envs/sleap_1_5_2/lib/python3.13/site-packages/sleap/gui/app.py", line 56, in <module>
from qtpy import QtCore, QtGui
File "/home/lkeyes/miniconda3/envs/sleap_1_5_2/lib/python3.13/site-packages/qtpy/QtCore.py", line 135, in <module>
from PySide6.QtGui import Qt as guiQt
ImportError: /usr/lib/x86_64-linux-gnu/libQt6DBus.so.6: undefined symbol: _ZN14QObjectPrivateC2Ei, version Qt_6_PRIVATE_API
Your personal set up
Debian 6.1.148-1 (2025-08-26) x86_64
CPU Count: 16 : "AuthenticAMD AMD EPYC 7543 32-Core Processor 2899.999 MHz (2 chips x 8 cores)"
RAM: 64 GB
GPU: Tesla A40-PCIE-48GB
NVIDIA-SMI 570.124.06 Driver Version: 570.124.06 CUDA Version: 12.8
- OS:
- Version(s):
- SLEAP installation method (listed here):
Environment packages
# paste output of `pip freeze` or `conda list` here
aiohappyeyeballs==2.6.1
aiohttp==3.13.2
aiosignal==1.4.0
albucore==0.0.24
albumentations==2.0.8
annotated-types==0.7.0
antlr4-python3-runtime==4.9.3
anyio==4.11.0
argon2-cffi==25.1.0
argon2-cffi-bindings==25.1.0
arrow==1.4.0
asttokens==3.0.0
async-lru==2.0.5
attrs==25.4.0
av==15.1.0
babel==2.17.0
beautifulsoup4==4.14.2
bleach==6.3.0
certifi==2025.10.5
cffi==2.0.0
charset-normalizer==3.4.4
click==8.3.0
comm==0.2.3
contourpy==1.3.3
cycler==0.12.1
debugpy==1.8.17
decorator==5.2.1
defusedxml==0.7.1
executing==2.2.1
fastjsonschema==2.21.2
filelock==3.20.0
fonttools==4.60.1
fqdn==1.5.1
frozenlist==1.8.0
fsspec==2025.10.0
gitdb==4.0.12
GitPython==3.1.45
h11==0.16.0
h5py==3.15.1
hdmf==4.1.1
httpcore==1.0.9
httpx==0.28.1
hydra-core==1.3.2
idna==3.11
ImageIO==2.37.2
imageio-ffmpeg==0.6.0
imgstore==0.3.7
ipykernel==7.1.0
ipython==9.7.0
ipython_pygments_lexers==1.1.1
ipywidgets==8.1.8
isoduration==20.11.0
jedi==0.19.2
Jinja2==3.1.6
joblib==1.5.2
jsmin==3.0.1
json5==0.12.1
jsonpickle==4.1.1
jsonpointer==3.0.0
jsonschema==4.25.1
jsonschema-specifications==2025.9.1
jupyter==1.1.1
jupyter-console==6.6.3
jupyter-events==0.12.0
jupyter-lsp==2.3.0
jupyter_client==8.6.3
jupyter_core==5.9.1
jupyter_server==2.17.0
jupyter_server_terminals==0.5.3
jupyterlab==4.4.10
jupyterlab_pygments==0.3.0
jupyterlab_server==2.28.0
jupyterlab_widgets==3.0.16
kiwisolver==1.4.9
kornia==0.8.2
kornia_rs==0.1.10
lark==1.3.1
lazy_loader==0.4
lightning==2.5.6
lightning-utilities==0.15.2
loguru==0.7.3
markdown-it-py==4.0.0
MarkupSafe==3.0.3
matplotlib==3.10.7
matplotlib-inline==0.2.1
mdurl==0.1.2
mistune==3.1.4
mpmath==1.3.0
multidict==6.7.0
nbclient==0.10.2
nbconvert==7.16.6
nbformat==5.10.4
ndx-pose==0.2.2
nest-asyncio==1.6.0
networkx==3.5
nixio==1.5.4
notebook==7.4.7
notebook_shim==0.2.4
numpy==2.2.6
nvidia-cublas-cu12==12.8.4.1
nvidia-cuda-cupti-cu12==12.8.90
nvidia-cuda-nvrtc-cu12==12.8.93
nvidia-cuda-runtime-cu12==12.8.90
nvidia-cudnn-cu12==9.10.2.21
nvidia-cufft-cu12==11.3.3.83
nvidia-cufile-cu12==1.13.1.3
nvidia-curand-cu12==10.3.9.90
nvidia-cusolver-cu12==11.7.3.90
nvidia-cusparse-cu12==12.5.8.93
nvidia-cusparselt-cu12==0.7.1
nvidia-nccl-cu12==2.27.3
nvidia-nvjitlink-cu12==12.8.93
nvidia-nvtx-cu12==12.8.90
omegaconf==2.3.0
opencv-python==4.12.0.88
opencv-python-headless==4.12.0.88
packaging==25.0
pandas==2.3.3
pandocfilters==1.5.1
parso==0.8.5
pexpect==4.9.0
pillow==12.0.0
platformdirs==4.5.0
prometheus_client==0.23.1
prompt_toolkit==3.0.52
propcache==0.4.1
protobuf==6.33.0
psutil==7.1.3
ptyprocess==0.7.0
pure_eval==0.2.3
pycparser==2.23
pydantic==2.12.4
pydantic_core==2.41.5
Pygments==2.19.2
pykalman==0.10.2
pymatreader==1.1.0
pynwb==3.1.2
pyparsing==3.2.5
PySide6==6.10.0
PySide6_Addons==6.10.0
PySide6_Essentials==6.10.0
python-dateutil==2.9.0.post0
python-json-logger==4.0.0
python-rapidjson==1.22
pytorch-lightning==2.5.6
pytz==2025.2
PyYAML==6.0.3
pyzmq==27.1.0
QtPy==2.4.3
referencing==0.37.0
requests==2.32.5
rfc3339-validator==0.1.4
rfc3986-validator==0.1.1
rfc3987-syntax==1.1.0
rich==14.2.0
rich-click==1.9.4
rpds-py==0.28.0
ruamel.yaml==0.18.16
ruamel.yaml.clib==0.2.14
scikit-base==0.12.6
scikit-image==0.25.2
scikit-learn==1.7.2
scipy==1.16.3
seaborn==0.13.2
Send2Trash==1.8.3
sentry-sdk==2.44.0
setuptools==80.9.0
shiboken6==6.10.0
simplejson==3.20.2
simsimd==6.5.3
six==1.17.0
sleap==1.5.2
sleap-io==0.5.7
sleap-nn==0.0.4
smmap==5.0.2
sniffio==1.3.1
soupsieve==2.8
stack-data==0.6.3
stringzilla==4.2.3
sympy==1.14.0
terminado==0.18.1
threadpoolctl==3.6.0
tifffile==2025.10.16
tinycss2==1.4.0
torch==2.8.0+cu128
torchmetrics==1.8.2
torchvision==0.23.0+cu128
tornado==6.5.2
tqdm==4.67.1
traitlets==5.14.3
triton==3.4.0
typing-inspection==0.4.2
typing_extensions==4.15.0
tzdata==2025.2
tzlocal==5.3.1
uri-template==1.3.0
urllib3==2.5.0
wandb==0.23.0
wcwidth==0.2.14
webcolors==25.10.0
webencodings==0.5.1
websocket-client==1.9.0
widgetsnbextension==4.0.15
xmltodict==1.0.2
yarl==1.22.0
</details>
<details><summary>Logs</summary>
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