canvas: Remove CommonMark dependency and markdown support

[ales-erjavec]

Issue

CommonMark release 0.8.0 breaks on case insensitive file systems (readthedocs/commonmark.py#134)

Description of changes

• Remove CommonMark dependency and markdown support

Includes

• Code changes
• Tests
• Documentation

[milianj]

Is it broken on Windows (Win7x64) too or is this a whole different problem. I'm trying to run Orange. Any feedback is appreciated.

C:\Dev\WPy-3702\scripts>python -m Orange.canvas
Traceback (most recent call last):
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\runpy.py", line 193, in run_module_as_main
"main", mod_spec)
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\runpy.py", line 85, in run_code
exec(code, run_globals)
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas_main.py", line 30, in
from Orange.canvas.application.canvasmain import CanvasMainWindow
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\application\canvasmain.py", line 61, in
from .canvastooldock import CanvasToolDock, QuickCategoryToolbar,
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\application\canvastooldock.py", line 25, in
from ..document.quickmenu import MenuPage
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\document_init.py", line 17, in
from .schemeedit import SchemeEditWidget
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\document\schemeedit.py", line 37, in
from .suggestions import Suggestions
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\document\suggestions.py", line 7, in
from .interactions import NewLinkAction
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\document\interactions.py", line 28, in
from ..canvas import items
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\canvas\items_init_.py", line 9, in
from .annotationitem import TextAnnotation, ArrowAnnotation
File "C:\Dev\WPy-3702\python-3.7.0.amd64\lib\site-packages\Orange\canvas\canvas\items\annotationitem.py", line 7, in
import CommonMark
ModuleNotFoundError: No module named 'CommonMark'

[samperd]

I ran into this problem when upgrading from orange 3.11 to 3.15 within anaconda on ubuntu linux 16.04

• upgrade conda packages through conda terminal
• installed orange canvas through anaconda navigator gui
• orange would not load
• went to anaconda-navigator environments
• selected installed packages and search for 'CommonMark'
• downgraded from 0.8 to 0.7.5
• started orange and it worked.

Look forward to patch working its way through the packaging system.

Cheers

[leeherman99]

This issue exist in both Win7 and Win10.

Installing recommonmark works, but this downgrades your Orange to 3.4.4. I would have liked samperd's solution, but downgrading the commonmark package in the Navigator environments tool doesn't seem to work for me. Getting:

ImportError: numpy.core.multiarray failed to import
ImportError: numpy.core.multiarray failed to import
ImportError: numpy.core.multiarray failed to import
ImportError: numpy.core.multiarray failed to import
Traceback (most recent call last):
File "C:\ProgramData\Anaconda3\Scripts\orange-canvas-script.py", line 6, in
from Orange.canvas.main import main
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange_init_.py", line 1, in
from .misc.lazy_module import LazyModule
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange\misc_init.py", line 3, in
from .distmatrix import DistMatrix
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange\misc\distmatrix.py", line 3, in
from Orange.data import Table, StringVariable, Domain
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange\data_init_.py", line 4, in
from .variable import *
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange\data\variable.py", line 12, in
from Orange.util import Registry, color_to_hex, hex_to_color, Reprable
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange\util.py", line 17, in
from Orange.data.util import scale # pylint: disable=unused-import
File "C:\ProgramData\Anaconda3\lib\site-packages\Orange\data\util.py", line 6, in
from scipy import sparse as sp
File "C:\ProgramData\Anaconda3\lib\site-packages\scipy_init_.py", line 62, in
from numpy import show_config as show_numpy_config
ImportError: cannot import name 'show_config'

[ajdapretnar]

@leeherman99 Perhaps you didn't set the conda-forge channel? conda config --add channels conda-forge

[leeherman99]

No, actually I did.

The solution was to upgrade to version 3.16. It works great now.