Bug#1051221: pyimagetool: The GUI does not start, and produces a python error 'Qt' has no attribute 'DashLine'

[Emmanuel FARHI]

Source: pyimagetool
Version: GUI fails with error 'Qt' has no attribute 'DashLine'
Severity: important
X-Debbugs-Cc: emmanuel.farhi at synchrotron-soleil.fr

Dear Maintainer,

   * What led up to the situation?

The GUI does not start with command 'python3 -m pyimagetool'. An initial error
is produced:
>> OSError: Packaged data files are not writeable

$ python3 -m pyimagetool
Traceback (most recent call last):
  File "<frozen runpy>", line 189, in _run_module_as_main
  File "<frozen runpy>", line 148, in _get_module_details
  File "<frozen runpy>", line 112, in _get_module_details
  File "/usr/lib/python3/dist-packages/pyimagetool/__init__.py", line 2, in
<module>
    from .ImageTool import ImageTool
  File "/usr/lib/python3/dist-packages/pyimagetool/ImageTool.py", line 8, in
<module>
    from .widgets import InfoBar
  File "/usr/lib/python3/dist-packages/pyimagetool/widgets.py", line 6, in
<module>
    from .cmaps import CMap
  File "/usr/lib/python3/dist-packages/pyimagetool/cmaps/__init__.py", line 1,
in <module>
    from .CMap import CMap
  File "/usr/lib/python3/dist-packages/pyimagetool/cmaps/CMap.py", line 66, in
<module>
    raise OSError(
OSError: Packaged data files are not writeable, use a helper script.See
/usr/share/pyimagetool/debian_pyimagetool.py

which we also get from ipython3:

$ ipython3
Python 3.11.2 (main, Mar 13 2023, 12:18:29) [GCC 12.2.0]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import pyimagetool
---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
Cell In [1], line 1
----> 1 import pyimagetool

File /usr/lib/python3/dist-packages/pyimagetool/__init__.py:2
      1 from .DataMatrix import RegularDataArray
----> 2 from .ImageTool import ImageTool
      3 from .PGImageTool import PGImageTool
      5 __all__ = ['ImageTool', 'RegularDataArray']

File /usr/lib/python3/dist-packages/pyimagetool/ImageTool.py:8
      5 import numpy as np
      6 import warnings
----> 8 from .widgets import InfoBar
      9 from .PGImageTool import PGImageTool
     10 from .DataMatrix import RegularDataArray

File /usr/lib/python3/dist-packages/pyimagetool/widgets.py:6
      3 from functools import partial
      5 from .DataMatrix import RegularDataArray
----> 6 from .cmaps import CMap
      9 class InfoBar(QtWidgets.QWidget):
     10     """Based on the input data, create a suitable info bar (maybe with
tabs?)"""

File /usr/lib/python3/dist-packages/pyimagetool/cmaps/__init__.py:1
----> 1 from .CMap import CMap

File /usr/lib/python3/dist-packages/pyimagetool/cmaps/CMap.py:66
     64     modulepath = Path(xdg.xdg_cache_home(), "PyImageTool")
     65 if not os.access(str(modulepath), os.W_OK):
---> 66     raise OSError(
     67         "Packaged data files are not writeable, use a helper script."
     68         "See /usr/share/pyimagetool/debian_pyimagetool.py"
     69     )
     72 class CMap:
     73     _instance = None

OSError: Packaged data files are not writeable, use a helper script.See
/usr/share/pyimagetool/debian_pyimagetool.py


It is possible to allow the package to write in the area area, but an other
error then comes in:

File /usr/lib/python3/dist-packages/pyimagetool/PGImageTool.py:24, in
PGImageTool()
     22 index_to_coord: List[str] = ['x', 'y', 'z', 't']
     23 frame_rate = 60
---> 24 bin_pen = pg.mkPen(style=pg.Qt.QtCore.Qt.DashLine)
     26 mouse_hover = QtCore.Signal(str)  # event fired when the mouse moves on
an image
     28 def __init__(self, data: RegularDataArray, parent=None, layout=0):

AttributeError: type object 'Qt' has no attribute 'DashLine'

   * What outcome did you expect instead?

The GUI, or a python Notebook should be usable, but this is not the case.

Considering that the code has not changed for 3 years, and that the
corresponding issue was sent https://github.com/kgord831/PyImageTool/issues/5
but had no answer, we recommend to drop this package.


-- System Information:
Debian Release: 12.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-11-amd64 (SMP w/256 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled