Failed to install python-mapnik from PPA

[sun9700]

I did the following instructions to install mapnik 3.0.0:

sudo add-apt-repository ppa:mapnik/nightly-trunk
sudo apt-get update
sudo apt-get install libmapnik libmapnik-dev mapnik-utils python-mapnik

BUT, the python binding is failed:

The following packages have unmet dependencies:
python-mapnik : Depends: libmapnik (= 3.0.0+dev20150425.git.d89033a-1trusty1) but 3.0.0+dev20150729.git.a78a895-1trusty1 is to be installed
E: Unable to correct problems, you have held broken packages.

[marcu]

I have the same error. No idea to fix it...

[whitelynx]

I had a similar error:

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 mapnik-input-plugin-osm : Depends: libmapnik (= 3.0.0+dev20150716.git.af0369d-1~trusty1) but 3.0.0+dev20150915.git.0532df7-1~trusty1 is to be installed

It looks like the "nightly" builds sometimes don't actually build all of the packages, so some newer packages get pushed, without updating others. Since all the packages explicitly depend on specific git versions of the other packages, that breaks installation.

It seems to me like there's 3 possible options:

• If any build fails, don't publish any updated packages to the PPA. (undesirable, because one package's build breaking prevents all other packages from getting updated)
• Change packages to only depend on any 3.0.0+dev version, not a specific version with a date and git commit SHA. (I'm not personally familiar enough with APT to tell whether or not this is actually possible)
• If a build fails, rebuild the previous working version against the current versions of its dependency packages. (takes more time during the build process, but should produce consistently usable results)

[ARolek]

Any updates on this? I'm also stuck where I can't install python-mapnik from the repo ppa:mapnik/nightly-trunk:

The following packages have unmet dependencies:
 python-mapnik : Depends: libmapnik (= 3.0.0+dev20150425.git.d89033a-1~trusty1) but 3.0.0+dev20151031.git.34f5b56-1~trusty1 is to be installed
E: Unable to correct problems, you have held broken packages.

[rcoup]

unfortunately building is being handled by Launchpad so we only have a few levers to pull here. I'll see if I can figure out what's going on.

If any build fails, don't publish any updated packages to the PPA. (undesirable, because one package's build breaking prevents all other packages from getting updated)

This should be the desired outcome -- the other options will inevitably lead to broken-in-weird-ways packages I think.

[ARolek]

@rcoup got it. Is there a work around for now?