Currently wheel builds include shared HDF5 1.8 library (what is available on the manylinux image). This is not a significant issue since:
It is not assumed that it will affect the format itself, only maybe the performance in managing it
The hdf5 tools on the system will use their own hdf5 versioned libraries themselves and will work fine with the format
Conda builds are generated from source and build against
The current Github actions builds against the latest HDF5 in the latest stable Ubuntu release as a check for source build breakages.
Other projects such as h5py and PyTables currently fetch and build the latest HDF5 before building their wheels for distribution and although likely minor, probably good to follow suit.
Currently wheel builds include shared HDF5 1.8 library (what is available on the manylinux image). This is not a significant issue since:
The current Github actions builds against the latest HDF5 in the latest stable Ubuntu release as a check for source build breakages.
Other projects such as h5py and PyTables currently fetch and build the latest HDF5 before building their wheels for distribution and although likely minor, probably good to follow suit.