[Kwant] Re: Peierls phase from kwant.physics.magnetic_gauge

[pablo . perez . piskunow]

Dear Paweł,

I can confirm that from your code, doing

```
lead0 = sys.leads[0]
lead0.inter_cell_hopping(params=params)
```
raises the same error.

Please, consider opening an issue in the Kwant gitlab repository.

Best regards,
Pablo