Support for extra-package-dbs in 'stack ghci' #1229
I've taken a look at this, and I think it should be done a different way.
Note that currently nothing about the package databases is passed to GHCi, yet it works as it should. This is because we're essentially running it via
So, I think the best way to fix this (and fix other things along with it!) is to include the extra-package-dbs in