Fedora builds failing -- scipy error

[ZedThree]

2/8 Test #53: MMS-spatial-fci ..................***Failed    1.34 sec
/home/test/BOUT-dev/build/tests/MMS/spatial/fci/runtest:167: SyntaxWarning: invalid escape sequence '\i'
  label="{} $l_\inf$".format(method_orders[nslice]["name"]),
Making FCI MMS test
starting Bfield stuff
done Bfield stuff
Traceback (most recent call last):
  File "/home/test/BOUT-dev/build/tests/MMS/spatial/fci/runtest", line 78, in <module>
    zb.write_maps(
    ~~~~~~~~~~~~~^
        grid, field, maps, new_names=False, metric2d=conf.isMetric2D(), quiet=True
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/lib/python3.13/site-packages/zoidberg/zoidberg.py", line 285, in write_maps
    par_pgrids = [StructuredPoloidalGrid(p.R, p.Z) for p in par_pgrids]
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/zoidberg/poloidal_grid.py", line 301, in __init__
    self._spl_r = RectBivariateSpline(xinds, zinds, R_ext)
                  ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.13/site-packages/scipy/interpolate/_fitpack2.py", line 1602, in __init__
    nx, tx, ny, ty, c, fp, ier = dfitpack.regrid_smth(x, y, z, xb, xe, yb,
                                 ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
                                                      ye, kx, ky, s)
                                                      ^^^^^^^^^^^^^^
_dfitpack.error: (mx>kx) failed for hidden mx: regrid_smth:mx=3

Just the one test. Not a particularly enlightening error message, but I'm going to guess scipy was updated recently.

[dschwoerer]

I am not sure it is the scipy update, or the zoidberg update. This seems to be solveable by specifying kx - which is probably not needed for real grids, but only for tests (nx <= 3 seems to be causing issues)

I am working on a few fixes for zoidberg and bout++, also enabling zoidberg in the non-fedora cases, as this is not at all fedora specific, but just the only CI run with zoidberg installed.

[dschwoerer]

I am working on fixes in the scipy-1.14.1 branch - some of the changes probably should go to zoidberg ...