I'm sorry for the late response to this - I don't have any great advice
regarding debugging these tool_dependencies.xml issues. I think those
virtualenv tags are particularly brittle and I recommend switching to a
more manual approach to Python dependencies if you are going to continue
using tool_dependencies.xml - setting up packages for each Python package
and referencing them the way say Macs2 does
https://github.com/galaxyproject/tools-iuc/blob/master/tools/macs2/tool_dependencies.xml
.

That said - the IUC and devteam have stopped writing tool_dependencies.xml
files and have switch to Conda for all of our packaging. There is some
documentation here:

- https://docs.galaxyproject.org/en/latest/admin/conda_faq.html
-
http://planemo.readthedocs.io/en/latest/writing_advanced.html#dependencies-and-conda

Conda dependencies should be a bit more transparent - at least during this
development stage.

-John


On Thu, Dec 22, 2016 at 2:36 AM, Linda Bakker <linda.bak...@wur.nl> wrote:

> Hi All,
>
> I am having some problems with my tool dependencies to setup a python venv.
>
> Dependencies.xml looks like this:
>
>
>
> When i install my tool from the toolshed, it fails to install the venv
> dependency with this error message:
>
>
>
> I am not sure what the problem exactly seems to be. os.py should be a
> default python package right or do i need to specify it in the dependencies
> file?
> Can someone point me in the right direction of what the problem might be.
>
> Thanks!
>
> with regards ,
>  Linda Bakker
>
>
> --
> Linda Bakker
> Bioinformatics Research Assistant
> Plant Research International, Wageningen UR
> Building 107 (Radix), room W1.Fa.054
> Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
> tel: +31-317-480756 <+31%20317%20480%20756>
> email: linda.bak...@wur.nl
>
>
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