Almost there but running into a build problem with Blender...

https://koji.fedoraproject.org/koji/taskinfo?taskID=112606258
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/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp: In member function ‘bool ccl::ToNanoOp::operator()(const openvdb::v11_0::GridBase::ConstPtr&)’:
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:58:33: error: ‘openToNanoVDB’ is not a member of ‘nanovdb’
   58 |             nanogrid = nanovdb::openToNanoVDB<nanovdb::HostBuffer,
      |                                 ^~~~~~~~~~~~~
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:58:66: error: expected primary-expression before ‘,’ token
   58 |             nanogrid = nanovdb::openToNanoVDB<nanovdb::HostBuffer,
      |                                                                  ^
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:59:79: error: expected ‘(’ before ‘,’ token
   59 |                                               typename FloatGridType::TreeType,
      |                                                                               ^
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:60:59: error: expected primary-expression before ‘>’ token
   60 |                                               nanovdb::FpN>(floatgrid);
      |                                                           ^
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:64:33: error: ‘openToNanoVDB’ is not a member of ‘nanovdb’
   64 |             nanogrid = nanovdb::openToNanoVDB<nanovdb::HostBuffer,
      |                                 ^~~~~~~~~~~~~
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:64:66: error: expected primary-expression before ‘,’ token
   64 |             nanogrid = nanovdb::openToNanoVDB<nanovdb::HostBuffer,
      |                                                                  ^
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:65:79: error: expected ‘(’ before ‘,’ token
   65 |                                               typename FloatGridType::TreeType,
      |                                                                               ^
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:66:60: error: expected primary-expression before ‘>’ token
   66 |                                               nanovdb::Fp16>(floatgrid);
      |                                                            ^
/builddir/build/BUILD/blender-4.0.2/intern/cycles/scene/image_vdb.cpp:71:29: error: ‘openToNanoVDB’ is not a member of ‘nanovdb’
   71 |         nanogrid = nanovdb::openToNanoVDB(floatgrid);
      |                             ^~~~~~~~~~~~~
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Looking at openvdb I see this but it looks like it's only skipping nanovdb_convert, why I don't know...

https://koji.fedoraproject.org/koji/buildinfo?buildID=2391613
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-- --------- Configuring NanoVDB Cmd Tools ------------
-- ----------------------------------------------------
CMake Warning at nanovdb/nanovdb/cmd/CMakeLists.txt:31 (message):
   - OpenVDB required to build nanovdb_convert. Skipping.
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Any help would be appreciated but I don't want to leave the side-tag open much longer.

Thanks,
Richard