(in) so far as
To such an extent that; to the degree that. In so far as money is concerned, our project will be completely funded by private donations. So far as I can guess, we should be finished filming by late spring.
so far as
see under as far as.
in so ˈfar as
(also insoˈfar as) to the extent that: In so far as I am a judge of these things, the repairs to the car have been done very well.It was a good report in so far as it showed what needs to be done.