Ugly surprises

I knew that work around existing software is not so simple but I didn't think that it could cause me so many problems.
I am trying to build a wrapper for Subversion (inside an ampler project) for my degree thesis .
Ideally this program should be able to work in an (almost) transparent way also with CVS.
So, to get this I have avoided to use the developer's API of Subversion and I have confined to build a wrapper around the command line client.
Besides doing this, unfortunately, I should make Subclipse (the plugin Eclipse of Subversion) able to recognize the new commands that I adds to SVN.
Stupidly I had supposed that this dearly worked.
Sinned that go now to discover that in reality, Subclipse doesn't succeed in communicating in http or svn(a proprietor protocool for Subversion) if used through the command line!!!
Taken by the panic I have gone to adjourn Subclipse. What do I discover? The bug is still present and, worse, the command line won't be anymore avaliable as a supported interface in future versions of subclipse.
what a cheat! :,-(