[Bug] g.gui.timeline fails with ctypes.OverflowError on Windows

[petrasovaa]

Describe the bug
g.gui.timeline doesn't display anything, originally reported by @chaedri

To Reproduce
t.create output=test semantictype=mean title=title description=desc
t.register -i input=test maps=elev_lid792_1m@PERMANENT,elev_state_500m@PERMANENT start=2000-01-01 increment="1 month"
g.gui.timeline test

Traceback (most recent call last):
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\cbook\__init__.py", line 287, in process
    func(*args, **kwargs)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\backend_bases.py", line 3061, in
mouse_move
    s = self._mouse_event_to_message(event)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\backend_bases.py", line 3041, in
_mouse_event_to_message
    s = event.inaxes.format_coord(event.xdata, event.ydata)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\axes\_base.py", line 4155, in
format_coord
    xs = self.format_xdata(x)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\axes\_base.py", line 4137, in
format_xdata
    return (self.fmt_xdata if self.fmt_xdata is not None
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\ticker.py", line 239, in
format_data_short
    return self.format_data(value)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\ticker.py", line 231, in format_data
    return self.__call__(value)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\dates.py", line 973, in __call__
    result = self._formatter(x, pos)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\dates.py", line 636, in __call__
    result = num2date(x, self.tz).strftime(self.fmt)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\dates.py", line 528, in num2date
    return _from_ordinalf_np_vectorized(x, tz).tolist()
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\numpy\lib\function_base.py", line 2113, in __call__
    return self._vectorize_call(func=func, args=vargs)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\numpy\lib\function_base.py", line 2197, in
_vectorize_call
    outputs = ufunc(*inputs)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\matplotlib\dates.py", line 357, in _from_ordinalf
    dt = dt.replace(tzinfo=dateutil.tz.gettz('UTC'))
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\dateutil\tz\tz.py", line 1557, in __call__
    rv = self.nocache(name=name)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\dateutil\tz\tz.py", line 1648, in nocache
    tz = tzwin(name)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\dateutil\tz\win.py", line 223, in __init__
    keydict = valuestodict(tzkey)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\dateutil\tz\win.py", line 366, in valuestodict
    value = tz_res.name_from_string(value)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\dateutil\tz\win.py", line 124, in name_from_string
    return self.load_name(offset)
  File "C:\Program Files\GRASS GIS 8.0\Python39\lib\site-
packages\dateutil\tz\win.py", line 93, in load_name
    nchar = self.LoadStringW(self._tzres._handle, offset,
lpBuffer, 0)
ctypes.ArgumentError: argument 1: <class 'OverflowError'>:
int too long to convert

Also can be simply reproduced with example from dateutil/tz/win.py tzres.load_name method:

from dateutil.tzwin import tzres
tzr = tzres()
tzr.load_name(112)

System description (please complete the following information):

• Operating System: Windows 10 Enterprise 64bit
• GRASS GIS 8.0.0RC2

Additional context
This is not a problem of g.gui.timeline rather perhaps some packaging issue?

[ecodiv]

The same seems to be true for the temporal plot tool, g.gui.tplot doesn't display anything.

[nilason]

I wonder if not the patch to ctypesgen:

grass/python/libgrass_interface_generator/ctypesgen/libraryloader.py

Lines 325 to 329 in c700a8a

	def __init__(self):
	super().__init__()
	for p in os.getenv("PATH").split(";"):
	if os.path.exists(p) and hasattr(os, "add_dll_directory"):
	os.add_dll_directory(p)

which adds all PATH directories to dll loading, could cause this and other Windows issues like #2101 .
I never felt good with that patch.

[neteler]

I never felt good with that patch.

What would to be changed to find out?

[nilason]

I never felt good with that patch.

What would to be changed to find out?

I'm not quite sure yet. I've been tinkering on a GRASS installation on a win can I have at my disposal, so far with no success.

[neteler]

Is this still an issue?
Since the 8.0.2 milestone is due now - to which milestone may this report be bumped?

[ecodiv]

Is this still an issue?

As far as I can see, yes, it is. Same for the other gui's in the temporal toolbox.

Since the 8.0.2 milestone is due now - to which milestone may this report be bumped?

Not sure how difficult this is to fix, but it is one of those features that you want to work when introducing the grass temporal framework to (new) Window users. Just as a plea to not bump it up to far into the future ;-)