Portfile for py25-tables

[tom.duck@…]

Python 2.5 is missing the pytables extension library (​http://www.pytables.org/), which is used to read hdf5 file in python. I have attached a Portfile based on the one for Python 2.4 at ​http://trac.macports.org/browser/trunk/dports/python/py-tables/Portfile.

I wrote my email in as the maintainer, but I would be just as happy if someone else's name was put in.

I ran the units tests that came with the package, and a few failures showed up. A transcript is given in the second attachment. These appear to be known and minor bugs associated with changes in the latest version of py25-numpy that have yet to be addressed by the pytables team. See the series of posts at ​http://thread.gmane.org/gmane.comp.python.pytables.user/849 for more information.

[tom.duck@…]

Unit test transcript

[skymoo (Adam Mercer)]

I get the following error when trying to install if py-tables is installed:

[ram@cizin py25-tables]$ sudo port install
--->  Fetching py25-tables
--->  Verifying checksum(s) for py25-tables
--->  Extracting py25-tables
--->  Configuring py25-tables
--->  Building py25-tables with target build_ext
--->  Staging py25-tables into destroot
--->  Installing py25-tables @2.0.3_0
--->  Activating py25-tables @2.0.3_0
Error: Target org.macports.activate returned: Image error: /opt/local/bin/nctoh5 is being used
by the active py-tables port.  Please deactivate this port first, or use the -f flag to force the
activation.
Error: Status 1 encountered during processing.

Would renaming nctoh5 to nctoh5-2.5 for python25 and nctoh5-2.4 for python24 cause anything to break?

[tom.duck@…]

Oops. I missed that -- I wasn't aware that pytables had utilities packaged with it. I will look into it and get back to you.

[tom.duck@…]

py25-tables Portfile

[tom.duck@…]

patch file for setup.py

[tom.duck@…]

There are three utilities bundled with pytables: ptdump, ptrepack and nctoh5. See ​http://www.pytables.org/docs/manual/apd.html.

I have attached a patch for setup.py and a new Portfile that uses it. The patch appends "-py25" to each of the utility names. There are also some additional dependencies, and they are commented on in the Portfile. The python24 version should probably be updated in the same way (both for the script names and dependencies).

The approach fink uses is to create symlinks from the unversioned names to the higher-version scripts (e.g., ptdump -> ptdump-25). See ​http://www.finkports.info/ports/sci/pytables-py.html. That seems like a reasonable choice, although I have no idea how to implement that in the context of MacPorts. Having symlinks from the unversioned names is needed to avoid breaking user scripts that may be depend on them.

[skymoo (Adam Mercer)]

Is the use of setuptools just for renaming the files? If so is there reason why they cannot be renamed in a post-destroot phase? i.e.

post-destroot {
  foreach f {ptdump ptrepack nctoh5} {
    move ${destroot}${prefix}/bin/${f} ${destroot}${prefix}/bin/${f}-py25
  }
}

Is there an inter-script dependency that renaming the programs in setup.py satisfies?

[tom.duck@…]

Yes, you are quite right. I am not quite fluent in tcl, and so went for the easy fix in the python. ;)

[skymoo (Adam Mercer)]

committed in r37939 with minor changes, thanks

[(none)]

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