[pyngl-talk] pyngl 1.5.0 source

Sat Dec 27 09:44:22 MST 2014

Hi all,

All of the NCL, PyNGL, and PyNIO code is currently under subversion.  We
have talked about moving to other source code control systems, but would
need to do all three packages simultaneously, and just haven't had the time
yet.

These three software packages depend on about 20 external software
packages, several of which have different build systems, and we've been
trying to see what it would take to get these all under some common build
system. Many of these packages have to be built a specific way with
particular options turned off, so they don't clash with other packages.
This means we can't use generically built packages that are provided by
other vendors.

The main issue for me is my admitted lack of knowledge on how pip works. I
assuming that all the external packages that PyNIO and PyNGL depend on
would also have to be either prebuilt on many systems, or would have to be
readily buildable via source code. Several of these packages are not under
github either.

The packages that are required include:

cairo
curl
esmf
expat
freetype
g2clib
gdal
hdf
hdf5
hdfeos
hdfeos5
jasper
jpeg
libpng
libxml2
netcdf
pixman
pkg-config
proj
szip
udunits
zlib

As a side: I used conda to install different versions of Python and NumPy,
and see that it has a free service called Binstar for hosting software for
package managers. I had to give up on conda, because it was using the old,
default compiler on my Mac, and I couldn't build my other packages with
this compiler. I realize there's probably a way to customize conda so that
it uses a newer compiler, but I haven't tried this yet.

Given my lack of experience with python installers, I would love to hear
from the python community about how we could best proceed with getting all
of these packages to work with a python installer like pip. It seems
there's more than one way to do this, but it's not clear to me what is the
best way.

Thanks for the discussion!

--Mary

On Thu, Dec 18, 2014 at 7:42 AM, Root, Benjamin <broot at aer.com> wrote:

> +1 for posting to github or any one of the other code collaboration
> sites like gitlab, sourceforge (which supports both svn and git), etc.
>
> Same thing, if possible, for PyNIO, please? One of the biggest barriers
> for me recommending PyNIO to others has been the lack of the ability to
> do "pip install pynio".
>
> Cheers!
> Ben Root
>
> On Wed 17 Dec 2014 05:15:41 PM EST, Radovan Bast wrote:
> > +1
> > i wanted to ask the exact same question almost the exact same moment.
> > i think PyNGL is a great code and i believe it would greatly benefit
> > to be placed under GitHub, then everybody could submit patches
> > and it would be less work for Mary et al.
> > best greetings,
> >   radovan
> >
> > On Wed, Dec 17, 2014 at 10:26 PM, Oleksandr Huziy
> > <guziy.sasha at gmail.com <mailto:guziy.sasha at gmail.com>> wrote:
> >
> >     Is there a reason why you are not putting it on github?
> >
> >     Cheers
> >
> >     2014-12-17 15:59 GMT-05:00 Mary Haley <haley at ucar.edu
> >     <mailto:haley at ucar.edu>>:
> >
> >         Thanks Orion, I'll take a look at the code and implement these
> >         changes.
> >
> >         --Mary
> >
> >
> >         On Tue, Dec 16, 2014 at 3:32 PM, Orion Poplawski
> >         <orion at cora.nwra.com <mailto:orion at cora.nwra.com>> wrote:
> >
> >             On 12/16/2014 10:50 AM, Mary Haley wrote:
> >             > Hi Orion,
> >             >
> >             > Sure thing, I just put it on the web:
> >             >
> >             >
> http://www.pyngl.ucar.edu/Download/files/PyNGL-1.5.0-beta.tar.gz
> >
> >             One other nit - you should exit with a non-zero value on
> >             error in setup.py:
> >
> >             e.g.:
> >
> >             except ImportError:
> >               print "Error: Cannot import NumPy. Can't continue."
> >               sys.exit(1)
> >
> >             except:
> >               print "NCARG_ROOT is not set; can't continue!"
> >               sys.exit(1)
> >
> >
> >             --
> >             Orion Poplawski
> >             Technical Manager 303-415-9701 x222
> <tel:303-415-9701%20x222>
> >             NWRA, Boulder/CoRA Office             FAX: 303-415-9702
> >             <tel:303-415-9702>
> >             3380 Mitchell Lane orion at nwra.com <mailto:orion at nwra.com>
> >             Boulder, CO 80301 http://www.nwra.com
> >
> >
> >         _______________________________________________
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> >
> >
> >
> >     --
> >     Sasha
> >
> >     _______________________________________________
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> >     http://mailman.ucar.edu/mailman/listinfo/pyngl-talk
> >
>
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