[Gimp-developer] Any way to convince Gimp installed in a prefix to only use the plugins in the prefix?

[Elle Stone <ellestone ninedegreesbelow com>]

I usually have three or four separate installations of Gimp from git, 
each in its own prefix.

Is there a way to tell Gimp in a prefix to only use the plugins in its 
own prefix, other than resetting the folder preferences every time I 
want to switch prefixes?

Elle