[BUG] PGM dependency issue in pandapower since PGM v1.10.107

[pawellytaev]

Describe the bug
Dear PGM developers,

In pandapower we are currently facing issues due to the dependency on PGM. The tests for runpp_pgm are currently failing in the pandapower test pipeline, see a few examples here:
e2nIEE/pandapower#2601
e2nIEE/pandapower#2391

I managed to reproduce this issue locally, using PGM v1.10.108. When rolling back versions locally, to v1.10.106, my tests are successful locally - therefore I suspect this issue coming from the 1.10.107 release.

Could you please give us a hint where this issue might come from? By scrolling through the recent PGM commit history, I couldn't get a clue unfortunately :-(

Thanks in advance.

Pawel

Input Data Validity

N/A

Data Dump

N/A

To Reproduce

• create a fresh conda environment
• install the latest version of pandapower from develop with pip install -e .["all"] ("all" in order to get all pandapower dependencies, including PGM)
• run pytest on pandapower/test/loadflow/test_runpp_pgm.py
• --> tests are failing
• pip install power_grid_model==1.10.106
• run pytest again
• --> tests are successful

Expected behavior

Successful tests in pandapower with latest PGM release. Alternatively, we will fix the dependency to PGM <= 1.10.106

Screenshots

failed test from https://github.com/e2nIEE/pandapower/actions/runs/14907111629/job/41871990973?pr=2601

[pawellytaev]

@panos-xenos @vogt31337

[mgovers]

Dear @pawellytaev , thank you for reporting. This is indeed a bug and was also reported in PowerGridModel/power-grid-model-io#297 . A bugfix was proposed in #988 and released in v1.10.109. Can you please confirm whether it is resolved?

Announcements regarding this issue will follow (c.c. @nitbharambe @Jerry-Jinfeng-Guo @petersalemink95 )

[pawellytaev]

Thanks for the fast response!
Unfortunately the tests are still failing, see here a screenshot of my local test:

and the failed jobs here after re-running them a few minutes ago:
https://github.com/e2nIEE/pandapower/actions/runs/14908893199/job/41883696010?pr=2391

[mgovers]

Thanks for the fast response! Unfortunately the tests are still failing, see here a screenshot of my local test:

and the failed jobs here after re-running them a few minutes ago: https://github.com/e2nIEE/pandapower/actions/runs/14908893199/job/41883696010?pr=2391

Apologies and thank you for checking. The problem was fixed via #991 and released in v1.10.110. Can you please double-check whether the issue was resolved correctly this time?

[pawellytaev]

v1.10.110 resolves this issue, thanks :)

Closing this issue then