Error with digraph plot and view

[Jianping Pan]

Hi all,

I'm using SageMath version 10.1.beta1, and I have dot2tex and graphviz installed. I checked that following line produces a nice PDF of the tableau.

sage: T = Tableau([[1,2,2], [2,3]]); view(T)

However, I found that I can not plot or view any digraphs. Thanks!

sage: G = graphs.PetersenGraph().to_directed()

sage: G.plot()

/Users/jianpingpan/sage/src/sage/repl/rich_output/display_manager.py:610: RichReprWarning: Exception in _rich_repr_ while displaying object: dlopen(/Users/jianpingpan/sage/local/lib/python3.8/site-packages/PIL/_imaging.cpython-38-darwin.so, 0x0002): Library not loaded: '/usr/local/opt/libtiff/lib/libtiff.5.dylib'
  Referenced from: '/Users/jianpingpan/sage/local/lib/python3.8/site-packages/PIL/_imaging.cpython-38-darwin.so'
  Reason: tried: '/usr/local/opt/libtiff/lib/libtiff.5.dylib' (no such file), '/usr/lib/libtiff.5.dylib' (no such file), '/usr/local/Cellar/libtiff/4.5.0/lib/libtiff.5.dylib' (no such file), '/usr/lib/libtiff.5.dylib' (no such file)
  warnings.warn(

sage: latex(G)

ImportError

Specifically for the ImportError, it looks like the following PIL import is broken

sage: from PIL import Image

---------------------------------------------------------------------------
ImportError                              Traceback (most recent call last)
Cell In [6], line 1
----> 1 from PIL import Image

File ~/sage/local/lib/python3.8/site-packages/PIL/Image.py:89
     80 MAX_IMAGE_PIXELS = int(1024 * 1024 * 1024 // 4 // 3)
     83 try:
     84     # If the _imaging C module is not present, Pillow will not load.
     85     # Note that other modules should not refer to _imaging directly;
     86     # import Image and use the Image.core variable instead.
     87     # Also note that Image.core is not a publicly documented interface,
     88     # and should be considered private and subject to change.
---> 89     from . import _imaging as core
     91     if __version__ != getattr(core, "PILLOW_VERSION", None):
     92         raise ImportError(
     93             "The _imaging extension was built for another version of Pillow or PIL:\n"
     94             f"Core version: {getattr(core, 'PILLOW_VERSION', None)}\n"
     95             f"Pillow version: {__version__}"
     96         )

ImportError: dlopen(/Users/jianpingpan/sage/local/lib/python3.8/site-packages/PIL/_imaging.cpython-38-darwin.so, 0x0002): Library not loaded: '/usr/local/opt/libtiff/lib/libtiff.5.dylib'
  Referenced from: '/Users/jianpingpan/sage/local/lib/python3.8/site-packages/PIL/_imaging.cpython-38-darwin.so'
  Reason: tried: '/usr/local/opt/libtiff/lib/libtiff.5.dylib' (no such file), '/usr/lib/libtiff.5.dylib' (no such file), '/usr/local/Cellar/libtiff/4.5.0/lib/libtiff.5.dylib' (no such file), '/usr/lib/libtiff.5.dylib' (no such file)

[Matthias Koeppe]

Try "make -j list-broken-packages", which may give instructions how to fix this

[Jianping Pan]

Dear Matthias,

Thanks for your help! I tried that and found that several packages are broken. I uninstalled them and re-installed some of them, now it is working!

Thanks,

Jianping