[ros-users] Gem installer support

Peter Soetens peter at thesourceworks.com
Mon Sep 24 18:28:03 UTC 2012

Hi Tully,

We tested the new gem support in the prerelease build farm, but the
gem installer mod fails during the 'rosdep install -y
orocos_toolchain' step because 'rubygems' is not yet installed in that
stage. We do depend on it in the manifest.xml, but the
installer.get_installed_packages() step is done before the debs are
installed. Hence failure.

The easiest resolution would be to extend the build farm such that
'rubygems' is added to this list :

Executing ['sudo', 'chroot',
'apt-get', 'install', '-y', '--force-yes', 'build-essential',
'python-yaml', 'python-svn', 'cmake', 'subversion', 'mercurial',
'bzr', 'git-core', 'wget', 'python-setuptools', 'python-pip']

The alternative is to modify rosdep in order to first install packages
using the default platform installer and then later the gems... but
that seems fragile.

We can contribute another patch such that rosdep fails more gracefully
with a meaningful error message if rubygems is not installed (error
today is 'no such file or directory')

Thoughts ?


On Thu, Sep 20, 2012 at 11:25 AM, Tully Foote <tfoote at willowgarage.com> wrote:
> Hi Ruben,
> Thanks for the patch to add gem support.  We should be able to merge it in
> and release it in the next few days.
> Tully
> On Thu, Sep 20, 2012 at 12:51 AM, Ruben Smits <ruben.smits at intermodalics.eu>
> wrote:
>> Hi,
>> I'm in the middle of releasing orocos_toolchain for fuerte, since some
>> of our packages rely on ruby packages that are to be installed with
>> gem, I created gem installer support for rosdep, see ticket with
>> attached patch: https://code.ros.org/trac/ros/ticket/4050
>> This would allow us to cleanup our osdeps and rosdep rules.
>> Is there any time-schedule for when this feature would be picked up so
>> we could go on with the fuerte release?
>> Ruben
>> --
>> Ruben Smits, Phd
>> Chief Technology Officer
>> Intermodalics BVBA
>> +32479511786
>> www.intermodalics.eu
>> _______________________________________________
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> --
> Tully Foote
> tfoote at willowgarage.com
> (650) 475-2827
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