nixpkgs/pkgs/applications/science/machine-learning/shogun
Sebastián Mancilla 70b3662a67 shogun: disable broken test
Shogun has been broken for a while [0].

Looks like the latest update to openblas, by f07a0615ea (openblas:
0.3.20 -> 0.3.21, 2022-08-10), broke the `libshogun-mathematics_lapack`
example. It calculates the eigenvectors for a matrix, but the assertions
now fail:

    compute_eigenvectors
    A=[
    [       -0.500000000000000111,  0.707106781186547351,   0.5],
    [       0.707106781186547351,   1.04083408558608426e-16,        0.707106781186547129],
    [       -0.499999999999999722,  -0.707106781186547462,  0.5]
    ]
    eigenvalues=[-1.41421356237309492,1.04083408558608426e-17,1.41421356237309492]
    terminate called after throwing an instance of 'shogun::ShogunException'

The darwin build output shows a bit more detail:

    assertion is_equal(A(0,0), 0.5, eps) failed in void test_ev()
    file /tmp/nix-build-shogun-6.1.4.drv-0/source/examples/undocumented/libshogun/mathematics_lapack.cpp
    line 49

Disable the test to fix the build, although the results seem "correct".
It appears that openblas now calculates values with slightly less
precision, thus the assertion fails due to the expected epsilon.

[0]: https://hydra.nixos.org/build/194671473
2023-05-21 22:34:01 -04:00
..
default.nix shogun: disable broken test 2023-05-21 22:34:01 -04:00
eigen-3.4.patch
fix-virtual-destruction.patch shogun: fix compiler warnings 2023-05-21 22:34:01 -04:00
svmlight-scrubber.patch