numpy build fails for lack of numpy.math

[clayote]

buildozer debug seemed to work fine yesterday, but then I added armeabi-v7a to its archs and now this is happening:

cython -M --fast-fail -3 /home/sanotehu/src/lisien/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/numpy/armeabi-v7a__ndk_target_24/numpy/numpy/random/_common.pyx -o numpy/random/_common.cpython-311-x86_64-linux-gnu.so.p/numpy/random/_common.pyx.c
Ignoring "sys._home = value" override

Error compiling Cython file:
------------------------------------------------------------
...
from collections import namedtuple
from cpython cimport PyFloat_AsDouble
import sys
import numpy as np
cimport numpy as np
cimport numpy.math as npmath
        ^
------------------------------------------------------------

/home/sanotehu/src/lisien/.buildozer/android/platform/build-arm64-v8a_armeabi-v7a/build/other_builds/numpy/armeabi-v7a__ndk_target_24/numpy/numpy/random/_common.pyx:8:8: 'numpy/math.pxd' not found

Full log, as well as my buildozer.spec, are at this gist.

[T-Dynamos]

Do try building on this branch #3136

[clayote]

Do try building on this branch #3136

I have now tried this, and it doesn't seem to make much difference. Similar log files and buildozer.spec here.

[clayote]

I gather math.pxd is not part of numpy, exactly, but of Cython. Here's the file on the Cython source tree.

[clayote]

I tried modifying the numpy recipe slightly, to point it at a release tarball of numpy, rather than its git repository; this somehow caused an error even finding meson. I think maybe this points to some deeper issue with MesonRecipe?

[mre2m2]

I'm encountering the same error: 'numpy/math.pxd' not found.
The build had been working consistently before, and the last successful build was just 3 days ago, without any code changes since.

It seems that P4A creates an isolated environment and ignores specified version of Cython (==0.29.33) and there is a compatibility issue between newer Cython versions and older Numpy versions.

attached is my full log, thanks a lot for your help

0_build.txt

[T-Dynamos]

Maybe try pining cython version as:

hostpython_prerequisites = ["Cython==3.0.6"]  # meson does not detects venv's cython

(in numpy recipe)

[clayote]

That seemed to work, thanks @T-Dynamos!