Hi all, sorry for the long email, but I think it's an important topic for 
our planning meeting tomorrow.

We've got some user feedback expressing it would be much easier to 
assemble libraries with various plug-ins as needed, meaning the OpenUP 
library by default should contain base_concepts and openup plug-ins only, 
then any additions could be download from Eclipse web site. In other 
words, one wants to download OpenUP without having to deal with other 
plug-ins they don't plan to use on near or long term. 

As this is simple to solve from the user perspective, it may pose some 
challenges from content development perspective.

- From user perspective, EPF Composer offers today the capability for 
exporting and importing plug-ins. We can simply provide OpenUP library 
with openup and base_concepts plug-ins only, then users pick and choose 
any OpenUP/xyz from EPF web site and import it to their library. The web 
site download area would be populated with these plug-ins. For user's 
convenience, we can periodically publish these various configurations and 
make it readily available for download.

- From development perspective, every extension to OpenUP plug-in should 
*ideally* be created in the OpenUP library itself, because it makes it 
easier from the version control perspective to handle the various xmi 
files individually. If you separate plug-ins in different libraries, 
plug-in authors will have to keep copies of OpenUP in a sandbox location, 
develop their plug-ins as extension to OpenUP, export those plug-ins from 
time to time, add them to CVS as a zip file, them make available for 
download by users. We loose granularity in our version control, and are 
obliged to keep local copies of OpenUP library.
UNLESS these sandbox locations are also in CVS, in a different branch than 
the main OpenUP library. Authors can work on their plug-ins and commit 
individual xmi files to CVS - the only caveat for plug-in authors is to 
keep this sandbox OpenUP up-to-date with most current main OpenUP. Exports 
of their plug-ins would occur as part of periodically builds, so plug-ins 
can be made available in the download area.
That approach tries to solve the fact that EPF Composer does not work with 
multiple projects from different workspaces.

Conclusion: I don't believe separating the OpenUP extensions from the main 
OpenUP library in CVS will harm the concept of OpenUP Family. Moreover, 
that makes it easier for plug-ins to evolve at different pace than the 
OpenUP library itself is evolving, and multiple authors can work their 
solution in parallel. Also, those authors can take the responsibility of 
uploading their plug-ins and updating the web site themselves- sort of 
sharing web master's responsibilities :-)

What is your take on this? We can discuss it during our planning meeting 
tomorrow.

Thanks,

Ricardo Balduino
IBM Rational Software (www.ibm.com/rational)
Eclipse Process Framework (www.eclipse.org/epf)
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