> I would like to prevent scanning for addins and addin roots of DLLs in
> my application directory except for those that I explicitly whitelist.
> Right now I have to add <exclude> entries for every *other* DLL in
> that directory. I see that AddinFileSystemExtension can be used to
> provide a virtualized view of the file-system to the scanner, so it
> seems theoretically possible that I could just provide it with a view
> that hides all DLLs except for the ones in my whitelist. However, I
> can't see a way to use this correctly. I can register this with an
> AddinRegistry with RegisterExtension, but AddinEngine.Initialize
> creates a new AddinRegistry and then immediately starts scanning with
> it, before I have an opportunity to register any extension with it. So
> even though I can eventually register the extension, it's too late,
> because the registry has already scanned all the DLLs in the
> application directory.

> 1. Aside from this issue, is AddinFileSystemExtension suitable for
> this purpose?

> 2. Is there a way around this problem without a change in Mono.Addins?

> 3. If not, I could probably change Mono.Addins to achieve what I want,
> but how can I maximize the chance that my patch would be accepted back
> into the project?