This is really frustrating. I can't get my extremely simple plugin to install 
from a local update site. It's probably because my product isn't properly 
p2-enabled, but I'm not entirely sure.



 
Here's my situation... 
 
I've got a 3.5 RCP app. It's big. Hundreds of plugins. For various 
reasons--particularly because I'm inside a firewall in a closed network--I 
can't upgrade to 3.7 for a while, so I need to make it work in 3.5. We're using 
an older version of Tycho, so p2-enabling through the PDE API isn't available 
to me either. Basically, I have to enable my product for p2 after it's already 
built.
 
I used the FeaturesAndBundledPublisher to create my repository, even though I 
had to comment out in the feature.xml files some plugins with non-compliant 
version numbers. Then I used eclipsesec.exe and the director app to install one 
of the features into my product, hoping that it would create the proper p2 
directories and whatnot. 
 
I seem to get org.eclipse.equinox.p2.core and org.eclipse.equinox.p2.engine 
directories well enough (including my profile), but no 
org.eclipse.equinox.p2.repository directory. I'm not even sure that's required, 
but there's one under the normal eclipse install, so it looked suspiciously 
absent. I'm also missing an org.eclipse.equinox.simpleconfigurator directory 
under configuration, not to mention two other org.eclipse.equinox.* directories 
that I see in the regular Eclipse install. Frankly, I don't see anywhere in 
your documentation how those directories even get created from the p2 APIs. Am 
I supposed to manually put them in? All I've got is my config.ini file, which 
has suited our uses for 4 years.
 
When I try to install my plugin via my update site, everything looks just fine. 
It says that it's installed and I can uninstall it too. However, my sample view 
doesn't show up, even after restarting. I can see it if I start up the plugin 
with the product through the IDE debug config, but not after installing through 
the p2 UI.
 
I'm lost even looking for the installed jar(s). There must be some serious 
magic going on (magic is bad!). I can delete my runtime workspace and 
completely rebuild my p2 directory, yet my product still remembers my installed 
plugin and its history. Where does that info even get stored?
 
Anyway, if I don't get this figured out, my project is in serious jeopardy. We 
need to get a handle on p2 to make our product my flexible and deployable. It's 
just too big to be deploying a 1/2 GB zip anymore.
 
Please help me understand:
 
 1) What I'm probably missing (directories, configuration, etc.)
 2) Some insider advice on how to troubleshoot it better

 3) Where the heck installed features/plug-ins' jars are stored and how to 
configure it to go elsewhere (particularly a networked drive)
 4) How to p2-enable an existing product via the APIs (by the way, how come the 
Wiki mentions an InstallPublisher but doesn't provide any details?)
 
Thanks,
Chip Downs
 
 
 
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