Aha. OK, that's clear enough! Thanks, Ken. I'll figure out another way
to do it.

Mike

On Mon, 2010-08-02 at 14:58 -0700, Ken Conley wrote:
> Hi Mike,
> 
> You can't overlay a package that is part of the ROS core. Your options
> are to rename your new package, or do a modified install.
> 
> HTH,
> Ken
> 
> On Mon, Aug 2, 2010 at 2:53 PM, Michael Styer <michael@styer.net> wrote:
> > Hello,
> >
> > If I wanted to install a modified version of a package in ROS core (e.g.
> > message_filters) without removing the old version, how would I do it?
> >
> > I have ROS C-turtle installed via .deb packages in /opt/ros/cturtle/...,
> > I have a local package directory in $HOME/ros/packages, and my local
> > installation directory is listed first in my $ROS_PACKAGE_PATH. For
> > non-core packages, this works OK. But rospack always looks in $ROS_ROOT
> > first, regardless of what's in $ROS_PACKAGE_PATH (see line 1606 of
> > rospack.cpp, SVN revision 10588), so it will ignore any overlay for
> > packages in $ROS_ROOT. Is there another way to overlay core packages?
> >
> > Thanks!
> >
> > Mike
> >
> >
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> >
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