Rpy2 not finding package despite finding other packages within the same library

Question

I'm using Rpy2 version 3.3.2 and despite being able to find other R packages such as 'spd', 'rugarch', 'Matrix', etc. I am not able to use 'rmgarch' despite all of these packages being in the path given by .libPaths(). When loading the packages using utils.install_packages('rmgarch'), I am told about the package and it's dependancies: The downloaded source packages are in ‘/private/var/folders/.... Yet when trying to use the packages

robjects.r('''
        
        library('quantmod')
        library('rmgarch')
        library('Bessel') #A dependancy
        f <- function(u) {
            l<-u
        }
        ''')

all are loaded except 'rmgarch' and it's dependency Bessel. The error given is: RRuntimeError: Error in library("rmgarch") : there is no package called ‘rmgarch’. I have tried specifying the location of the library utils.install_packages('rmgarch', lib_loc=[path from .libPaths()]) but have not been successful. I don't know what else to try. Any advice/help would be greatly appreciated:)