[ros-users] Variant "base" does not exist in the unstable disro file.

[William Woodall]

I found something out myself, the variant names have changed.  You can look
at the available variants in this file:

https://code.ros.org/svn/release/trunk/distros/unstable.rosdistro

Under the section 'variants:'

I think the unhandled exception in rosinstall is still valid and the install
instructions need to be updated.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Woodall
Graduate Software Engineering
Auburn University
w at auburn.edu
wjwwood at gmail.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


On Sun, Jan 30, 2011 at 3:28 PM, William Woodall <wjwwood at gmail.com> wrote:

> I am trying to install ROS unstable on my Mac and the rosinstall command
> fails with a traceback:
>
> Traceback (most recent call last):
>   File
> "/opt/local/Library/Frameworks/Python.framework/Versions/Current/bin/rosinstall",
> line 551, in <module>
>     sys.exit(not rosinstall_main(sys.argv))
>   File
> "/opt/local/Library/Frameworks/Python.framework/Versions/Current/bin/rosinstall",
> line 508, in rosinstall_main
>     result = insert_source_yaml(source_yaml, a, observed_paths,
> aggregate_source_yaml)
>   File
> "/opt/local/Library/Frameworks/Python.framework/Versions/Current/bin/rosinstall",
> line 385, in insert_source_yaml
>     if not element[k]:
> TypeError: string indices must be integers, not str
>
> Which after some digging I found out is an unhandled exception here in the
> rosinstall.helpers.get_yaml_from_uri function:
>
> def get_yaml_from_uri(uri):
>
>    # now that we've got a config uri and a path, let's move out.
>   u = urlparse.urlparse(uri)
>   f = 0
>   if u.scheme == '': # maybe it's a local file?
>     try:
>       f = open(uri, 'r')
>     except IOError, e:
>       print >> sys.stderr, "ahhhh error opening file: %s" % e
>       return None
>   else:
>     try:
>       f = urllib2.urlopen(uri)
>     except IOError, e:
>       print >> sys.stderr, "ahhhhh got an error from the interwebs: %s" % e
>   if not f:
>     print >> sys.stderr, "couldn't load config uri %s" % uri
>     return None
>   try:
>     y = yaml.load(f); #<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< This
> returns the string "Variant "base" does not exist in the unstable disro
> file." rather than throwing an exception
>   except yaml.YAMLError, e:
>     print >> sys.stderr, "ahhhhhhhh, yaml parse error: %s" % e # long ahh
>     return None
>   return y
>
> Which gets returned and manifested as the TypeError above.
>
> So, the real problem is that the rosinstall url from
> http://www.ros.org/wiki/unstable/Installation/Ubuntu/source and
> http://www.ros.org/wiki/unstable/Installation/OSX,
> https://code.ros.org/cgi-bin/gen_rosinstall.py?rosdistro=unstable&variant=base&overlay=no,
> returns the string "Variant "base" does not exist in the unstable disro
> file." rather then yaml.
>
> This is true of variants "ros" and "base", but "pr2" seems to return yaml,
> I might try to install using it for now.
>
> Is there a reason that unstable doesn't have "ros" and "base" or are things
> just changing with unstable's variant layout atm?
>
> Thanks,
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> William Woodall
> Graduate Software Engineering
> Auburn University
> w at auburn.edu
> wjwwood at gmail.com
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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