Dear Florian, Thanks for your response.
On 23 June 2014 17:13, Florian Friesdorf <[email protected]> wrote: > > Thx for reporting, I'm working on nixos python test suites and made a > note to investigate. > Good to know. Note, that I don't expect numexpr, or tables to work with pypy, because they both require cython, and last I checked it didn't play well with pypy. I might be wrong, though. > The solution looks good to me. However, from a brief look it feels that > one would want the default hdf5 package to be built with szip and > zlib. > > What do you think? > Well, my reason for not including szip by default was it's license. Quoting the hdf5-group page [1]: > Licensing terms > The version of Szip distributed with HDF products is free for > non-commercial use, which may occur in two sets of circumstances: > Non-commercial users may use the Szip software integrated with HDF > products to both encode (compress) and decode (uncompress) data. This > applies to educational and research applications. > Commercial users may use the software to decode any data. Further, they > may use the software in internal activities that do not involve or result > in the development of an Szip-based software product. > Commercial licenses are available for commercial users who wish to > distribute an Szip-based software product or engage in commercial uses that > are not allowed above. For further licensing information or to view a copy > of the Szip copyright statement, see Commercial use terms and the copyright > and license notice pertaining to Szip in HDF products. So, it's a license that requires some thought to figure out if you're allowed to use it or not. I thought it would be better not to include it by default, so that no one breaks the license unknowingly. I don't know what the Nix policy generally is, when it comes to licenses. Basically, I'm returning the question: Is it okay to include this package by default, or not? Best, Andreas [1]: http://www.hdfgroup.org/doc_resource/SZIP/
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