Bug#972394: got same error in other project

[Joachim Wuttke]

Hi Markus,

I confirm that this is a serious issue.

I got the same error message

    Could NOT find Python3 (missing: Python3_INCLUDE_DIRS Python3_LIBRARIES
    Development NumPy Development.Module Development.Embed) (found version
    "3.9.0")

in a completely different software project after I dist-upgraded my Debian/
testing system. That upgrade did not affect my cmake, which I compile
myself (version 3.18.20200714-g2da7786-dirty). However, the upgrade did
change numerous Python3 packages, among them

    python3-numpy:amd64 (1:1.19.1-1, 1:1.19.2-2+b1)

but not python3-dev. So my guess is the problem is a change in python3-numpy
that breaks CMake's

        find_package(Python3 COMPONENTS Development NumPy)

command.

Accordingly, I will report the bug to python3-numpy.

Regards, Joachim

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