Python package installation issues

[Robinlovelace]

Seeing this message:

#8 53.84   Downloading Cartopy-0.18.0.tar.gz (14.4 MB)
#8 53.99      ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 14.4/14.4 MB 92.6 MB/s eta 0:00:00
#8 54.39   Preparing metadata (setup.py): started
#8 54.63   Preparing metadata (setup.py): finished with status 'error'
#8 54.64   error: subprocess-exited-with-error
#8 54.64   
#8 54.64   × python setup.py egg_info did not run successfully.
#8 54.64   │ exit code: 1
#8 54.64   ╰─> [13 lines of output]
#8 54.64       Traceback (most recent call last):
#8 54.64         File "/tmp/pip-install-xpr0hdls/cartopy_f8366d3bf5f44cd6b51d81b49e18c0f5/setup.py", line 43, in <module>
#8 54.64           import numpy as np
#8 54.64       ModuleNotFoundError: No module named 'numpy'
#8 54.64       
#8 54.64       During handling of the above exception, another exception occurred:
#8 54.64       
#8 54.64       Traceback (most recent call last):
#8 54.64         File "<string>", line 2, in <module>
#8 54.64         File "<pip-setuptools-caller>", line 34, in <module>
#8 54.64         File "/tmp/pip-install-xpr0hdls/cartopy_f8366d3bf5f44cd6b51d81b49e18c0f5/setup.py", line 45, in <module>
#8 54.64           raise ImportError('NumPy 1.10+ is required to install cartopy.')
#8 54.64       ImportError: NumPy 1.10+ is required to install cartopy.
#8 54.64       [end of output]

Source: https://github.com/geocompr/docker/runs/7054120092?check_suite_focus=true#step:8:736 Any ideas welcome, call for help in the dark @martinfleis!

[martinfleis]

Cartopy doesn't have compiled wheels uploaded on PyPI, which means that every time you try installing it with pip, you need to compile it. Since it depends on GDAL, it is more often than not a source of a trouble. Don't know why they do not offer wheels, apart from a guess that is is non trivial to make them.

You can try debugging this, but I would heavily recommend going forward with #27 and installing everything with a strict channel priority from the conda-forge channel.

[Robinlovelace]

Many thanks for the wise advice Martin. I will follow it!

[Robinlovelace]

Heads-up @anitagraser, I saw this issue and thought it may be of interest:

Discarding https://files.pythonhosted.org/packages/ed/ca/524ce33692df3faeaa56852fb6a33b0b410be94cc288417565b96fef3f64/Cartopy-0.19.0.post1.tar.gz#sha256=4b8b4773a98ed7009fe17d9b6ec87ac3ac62b7d14634d7768c190eadc647d576 (from https://pypi.org/simple/cartopy/) (requires-python:>=3.5): Requested cartopy from https://files.pythonhosted.org/packages/ed/ca/524ce33692df3faeaa56852fb6a33b0b410be94cc288417565b96fef3f64/Cartopy-0.19.0.post1.tar.gz#sha256=4b8b4773a98ed7009fe17d9b6ec87ac3ac62b7d14634d7768c190eadc647d576 (from movingpandas) has inconsistent version: filename has '0.19.0.post1', but metadata has '0.0'

Source: https://github.com/geocompr/docker/runs/7060091673?check_suite_focus=true#step:8:719

I plan to remove movingpandas for now...

[anitagraser]

Sure. We don't need it for the basics anyway.