[GRASS-dev] Add link to manual page on the addon wiki

[Vaclav Petras]

On Wed, Feb 4, 2015 at 4:51 PM, Markus Neteler <neteler at osgeo.org> wrote:

> On Tue, Jan 27, 2015 at 10:17 AM, Moritz Lennert
> <mlennert at club.worldonline.be> wrote:
> > On 25/01/15 13:09, Markus Neteler wrote:
> >> I have updated that script now. Voilà:
> >>
> >> http://grass.osgeo.org/grass70/manuals/addons/
> >
> >
> > Great !
> >
> > Just one issue: some of the add-ons fail to compile on the server,
> sometimes
> > because some additional libraries are missing (ex: v.class.mlpy, v.nnstat
> > and v.kriging)
>
> Yes, because they are compiled on the Windows server which generates
> the nightly snapshots which does not have all packages.
>
>
Dependencies are easier to solve on Linux than on MS Windows but sometimes
it just might be too complicated to get them.

With Andy [1] we tried yesterday an approach where you avoid import of the
uncommon dependency at the beginning [2] and you import it only after
grass.script.parser() call [3]. This approach seems to work sufficiently
[4]. If the dependency is not present, user will get an after running the
module, GUI and help will be shown, which might be actually a bit
frustrating because at this point you already filled all the parameters,
however, it seems like a good compromise. It should work for most of the
Python scripts, e.g. v.class.mlpy and v.class.ml.

Another thing which needs more work is a possibility of installing
dependencies using the module itself, e.g. when a special flag (possibly
not processes by parser) is provided.

See also "how to formulate Makefiles for addons so that additional files
get installed correctly by g.extension" discussion [1].

Vaclav

[1] http://lists.osgeo.org/pipermail/grass-dev/2015-February/073713.html
[2]
http://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.flexure/r.flexure.py?rev=64452#L157
[3]
http://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.flexure/r.flexure.py?rev=64452#L176
[4] http://grass.osgeo.org/grass70/manuals/addons/r.flexure.html
[5]
http://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.flexure/r.flexure.py?rev=64452#L295



> > and because of that they are not listed on this page.
>
> Do you have an example? They are all autogenerated if they are in the
> parent Makefile registered.
>
> > I don't know what the policy is: should all modules compile on the server
> > and so should all dependencies be installed,
>
> Ideally yes but that's quite some work for the Windows server admin...
>
> > or do we have to find a
> > different solution for these ? Is it possible to only make the man pages
> and
> > so avoid the issue of dependencies in the main source code ?
>
> I could instead generate them on Linux. But not too soon due to being
> too busy these days.
>
> Markus
>
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