Alembic 1.8.9 has been released.

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Lucas Miller

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Oct 3, 2025, 2:56:13 PMOct 3
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Thanks to your feedback pull requests and submitted issues we
have a few bug fixes and build enhancements.

CMake:

We are dropping build support for Ilmbase and python 2.
We now require Imath 3+ and python 3+.

Use Imath::PyImath component to find the python Imath bindings. (PR465 and PR468)

Allow building Alembic source alongside Imath source. (PR467)

Put CMake config files in ${CMAKE_INSTALL_LIBDIR}/cmake/Alembic instead of
hard codeing lib/cmake/Alembic. (PR464)

Include Imath headers the Imath 3 way, i.e. #include <Imath/half.h> instead of
#include <half.h>  (Issue 431)

PyAlembic: Add DCCFPS hint support to CreateArchiveWithInfo (Issue 466)

Ogawa: Better handle very large Ogawa version numbers. (PR472)

You can get it here:

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