Bug#1028040: pycoast: FTBFS with pillow 9.4.0

[Graham Inggs]

Source: pycoast
Version: 1.6.1+dfsg-1
Severity: serious
Tags: ftbfs

Hi Maintainer

As can be seen on reproducible builds [1], pycoast fails to build from
source since the upload of pillow 9.4.0.  I've copied what I hope is
the relevant part of the log below.

Regards
Graham


[1] https://tests.reproducible-builds.org/debian/rb-pkg/pycoast.html


=================================== FAILURES ===================================
_____________________ TestContourWriterPIL.test_grid_germ ______________________

self = <pycoast.tests.test_pycoast.TestContourWriterPIL object at
0x7f210c9d1540>

    def test_grid_germ(self):
        """Check that issue #26 is fixed."""
        from pycoast import ContourWriterPIL

        result_file = os.path.join(os.path.dirname(__file__), "grid_germ.png")
        grid_img = Image.open(result_file)
        grid_data = np.array(grid_img)
        img = Image.new("RGB", (1024, 1024))
        proj4_string = "+proj=stere +ellps=bessel +lat_0=90.0
+lon_0=5.0 +lat_ts=50.0 +a=6378144.0 +b=6356759.0"
        area_extent = [-155100.436345, -4441495.37946, 868899.563655,
-3417495.37946]

        area_def = (proj4_string, area_extent)

        cw = ContourWriterPIL(gshhs_root_dir)

        cw.add_coastlines(img, area_def, resolution="l", level=4)
        font = ImageFont.truetype(os.path.join(os.path.dirname(__file__),
"test_data", "DejaVuSerif.ttf"), 16)
        cw.add_grid(
            img,
            area_def,
            (10.0, 10.0),
            (2.0, 2.0),
            font=font,
            fill="yellow",
            write_text=True,
            outline="red",
            minor_outline="white",
        )

        res = np.array(img)
>       assert fft_metric(grid_data, res), "Writing of grid to germ failed"
E       AssertionError: Writing of grid to germ failed
E       assert False
E        +  where False = fft_metric(array([[[0, 0, 0],\n        [0,
0, 0],\n        [0, 0, 0],\n        ...,\n        [0, 0, 0],\n
[0, 0, 0],\n        [0...     [0, 0, 0],\n        [0, 0, 0],\n
...,\n        [0, 0, 0],\n        [0, 0, 0],\n        [0, 0, 0]]],
dtype=uint8), array([[[0, 0, 0],\n        [0, 0, 0],\n        [0, 0,
0],\n        ...,\n        [0, 0, 0],\n        [0, 0, 0],\n
[0...     [0, 0, 0],\n        [0, 0, 0],\n        ...,\n        [0, 0,
0],\n        [0, 0, 0],\n        [0, 0, 0]]], dtype=uint8))

../../../pycoast/tests/test_pycoast.py:214: AssertionError