Hi all, I was a Google Summer of Code Student for Galaxy Project for the year 2013. One of my main tasks was to implement 'nested workflows' for Galaxy. See [1] This took me more time than I had expected and after sending a declined PR(See [2]) I re-attempted something similar with PR# 370. Through, few off-the-list discussions it has been decided that #370 would be declined as well. However, since this was a feature that was 'in-demand', I thought I would share it here, if in any case somebody finds it useful. The code is here[4]. However 'galaxy-central' is soon going to have a similar feature implemented soon and as such my code might not turn out to be so useful. However if you happen to find this useful and come across any bug(s) (apart from that listed on the PR) please feel free to report it. Thanks, Saket [1] https://trello.com/c/d4Onll9T/737-nested-workflows-or-workflow-modules [2] https://bitbucket.org/galaxy/galaxy-central/pull-request/229/nested-workflow... [3] https://bitbucket.org/galaxy/galaxy-central/pull-request/370/nested-workflow... [4] https://bitbucket.org/saketkc/galaxy-central-additions