Update setup.py

[rbolgaryn]

pip install igraph is incorrect, we should use pip install python-igraphinstead

[codecov]

Codecov Report

Attention: 11 lines in your changes are missing coverage. Please review.

Comparison is base (3544151) 79.58% compared to head (dfa5972) 79.55%.
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2165      +/-   ##
===========================================
- Coverage    79.58%   79.55%   -0.04%     
===========================================
  Files          255      255              
  Lines        27789    27798       +9     
===========================================
- Hits         22117    22115       -2     
- Misses        5672     5683      +11     

Files	Coverage Δ
...ter_classes/transformers/powerTransformersCim16.py	99.40% <100.00%> (+<0.01%)	⬆️
pandapower/converter/cim/cim2pp/from_cim.py	82.85% <ø> (ø)
setup.py	0.00% <ø> (ø)
pandapower/converter/cim/cim2pp/build_pp_net.py	70.62% <31.25%> (-5.85%)	⬇️

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[szhorvat]

pip install igraph is incorrect, we should use pip install python-igraphinstead

@rbolgaryn @mrifraunhofer This is has not been true for over two years now. Please revert to pip install igraph. Using python-igraph is deprecated and was was originally intended to be shut down already a year ago, as you can see at https://pypi.org/project/python-igraph/

See igraph/python-igraph#699

The name "python-igraph" will be discontinued as soon as enough projects stop depending on it.

[rbolgaryn]

Dear @szhorvat ,

thank you very much for pointing it out!

We will revert this PR.