[Ubuntu] UbuntuGIS PSC Creation

[Tim Michelsen]

> for syncing some packages from experimental to universe. I'm
> especially thinking about gdal, because we now have a version of gdal
> in ubuntugis which is incompatible with the one in ubuntu universe.
> This means effectively means that ubuntugis is currently incompatible
> with all other gis packages around, including the ones included in
> ubuntu. This makes it eg impossible to install saga 2.1.0 from my ppa
> alongside qgis 2.0.1.
That's a true statement.

I think -- a good notice actually -- many OSGEO apps are developing very
fast paced and a fixing bugs or adding features faster than the 6months
release time of Ubuntu and the even longer time of Debian.

This was may motivation at the time I needed it for daily work to set up
daily PPA builds for GRASS (6.x).

I have learned a lot on these recipe based builders and could contribute
with some hins there.
Check also:
http://grasswiki.osgeo.org/wiki/Ubuntu_Packaging