Cache the Haskell PPA

Hi all, it seems that the ppa installer that the haskell language support is using doesn’t cache the PPA. Is there a way to do this?

It would seem that perhaps using a docker image may be significantly faster than this approach.


I would be interested in having caches for GHC as well. Currently most time of my Haskell builds is spent on downloading GHC. The build itself is pretty fast.