[MacPorts] #51151: hdf5: updating to 1.10 switches to the new incompatible file format; please make it possible to build the 1.8.x branch

[MacPorts]

#51151: hdf5: updating to 1.10 switches to the new incompatible file format; please
make it possible to build the 1.8.x branch
-------------------------+--------------------------------
 Reporter:  ckhroulev@…  |      Owner:  macports-tickets@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.3.4
 Keywords:               |       Port:  hdf5 netcdf
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 HDF5 1.10 introduces the new file format that cannot be read with HDF5
 1.8.x. (See
 [https://www.hdfgroup.org/HDF5/release/obtain5110.html#newfeat].)

 If I upgrade this port now, the tools I have on my system will generate
 files I cannot share with people that did not upgrade HDF5 to version 1.10
 yet.

 Please consider adding a port variant (or a sub-port) that would use the
 1.8.x branch of HDF5 (note that '''the 1.8.x branch is still maintained by
 HDF Group''').

 This also affects NetCDF, which uses HDF5 under the hood. See
 [https://github.com/Unidata/netcdf-c/issues/250].

 Thanks!

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Ticket URL: <https://trac.macports.org/ticket/51151>
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