Relax the build dependency on NumPy #1121

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mgorny wants to merge 1 commit into opencv:4.x

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Open

Relax the build dependency on NumPy #1121

mgorny wants to merge 1 commit into opencv:4.x from mgorny:numpy-dep

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mgorny

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@mgorny mgorny commented Jul 7, 2025

Do not pin NumPy build dependencies to specific versions. It is no longer necessary since NumPy 1.25, as it automatically exposes "an API that is backwards compatible with the oldest NumPy version that supports the currently oldest compatible Python version" -- effectively removing the need to maintain downstream compatibility matrices.

See: https://numpy.org/devdocs/dev/depending_on_numpy.html#adding-a-dependency-on-numpy

@mgorny


 Relax the build dependency on NumPy

4a11e5a

Do not pin NumPy build dependencies to specific versions. It is
no longer necessary since NumPy 1.25, as it automatically exposes
"an API that is backwards compatible with the oldest NumPy version that
supports the currently oldest compatible Python version" -- effectively
removing the need to maintain downstream compatibility matrices.
See: https://numpy.org/devdocs/dev/depending_on_numpy.html#adding-a-dependency-on-numpy

@asmorkalov

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asmorkalov commented Jul 8, 2025

Hello @mgorny Thanks a for the contribution. The versions are pinned for now on purpose: numpy switched to manylinux_x_y build environment since version 2.3. OpenCV still uses manylinux2014. We plan to revise dependencies and build environment for the next release and update build requirements.