network-metis on conda-forge is incompatible with networkx

[DOSull]

This might not be a problem with networkx-metis per se, but I've spent the last couple of hours figuring out what was up and think it is worth raising it as an issue.

If I make a simple conda environment to work in with

conda env create -n nxm -c conda-forge cython networkx networkx-metis

then do

import networkx as nx
import nxmetis
G = nx.complete_graph(10)
nxmetis(G, 2)

I get an error which reports

AttributeError: 'Graph' object has no attribute 'node'

which is line 230 in __init__.py and suggests that the conda recipe above is still installing a version that dates back to late 2019 and this commit. Perhaps the dependencies information in the channel is incorrect? Is that something that should be reported to conda, or do I report it here?

As I rely on conda to manage my python environments and get nervous any time I have to resort to pip installing into a conda environment, I wonder if this is an issue that can be fixed? Until that happens I can't easily use network-metis in my normal workflow with recent versions of other packages.

[MridulS]

Unfortunately there hasn't been a new release after that fix, so there is no binary available at conda-forge to install it. It has to be pip installed if you want the latest packages. I tested the following 2 configurations and they worked for me.

environment.yml file with the last working networkx release.

name: nxm
channels:
  - conda-forge
dependencies:
  - networkx=1.11
  - cython
  - networkx-metis

pip-install inside the conda env if you would like to get the latest release.

name: nxm
channels:
  - conda-forge
dependencies:
  - networkx
  - cython
  - pip
  - pip:
    - git+https://github.com/networkx/networkx-metis.git

[DOSull]

OK thanks for looking into it. Seems like a new release might be worth doing by now!