Description:

Importing tensorflow fails due to missing C libraries

Traceback (most recent call last):
File "/usr/lib/python3.8/site-packages/tensorflow/python/pywrap_tensorflow.py", line 64, in <module>
from tensorflow.python._pywrap_tensorflow_internal import *
ImportError: libpng16.so.16: cannot open shared object file: No such file or directory

namcap indicates more missing dependencies other than libpng:

$ namcap /var/cache/pacman/pkg/python-tensorflow-2.3.0-3-x86_64.pkg.tar.zst
(...irrelevant lines omitted...)
python-tensorflow E: Dependency curl detected and not included (libraries ['usr/lib/libcurl.so.4'] needed in files ['usr/lib/python3.8/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so'])
python-tensorflow E: Dependency giflib detected and not included (libraries ['usr/lib/libgif.so.7'] needed in files ['usr/lib/python3.8/site-packages/tensorflow/python/profiler/internal/_pywrap_traceme.so'])
python-tensorflow E: Dependency icu detected and not included (libraries ['usr/lib/libicuuc.so.67'] needed in files ['usr/lib/python3.8/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so'])
python-tensorflow E: Dependency libpng detected and not included (libraries ['usr/lib/libpng16.so.16'] needed in files ['usr/lib/python3.8/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so'])
python-tensorflow E: Dependency libjpeg-turbo detected and not included (libraries ['usr/lib/libjpeg.so.8'] needed in files ['usr/lib/python3.8/site-packages/tensorflow/python/profiler/internal/_pywrap_traceme.so'])
(...irrelevant lines omitted...)

Additional info:
community/python-tensorflow 2.3.0-3

Steps to reproduce:

# Create such a PKGBUILD and run extra-x86_64-build
pkgname=foo
pkgver=1.0
pkgrel=1
arch=(any)
depends=(python python-tensorflow)

check() {
python -c 'import tensorflow'
}

package() {
true
}