Upgrading GHC 8.8.1+dfsg1+is+8.6.5+dfsg1-3 to 8.8.1?

[Martijn Bastiaan]

Hi all,

I was wondering about the package "ghc" in the Ubuntu 20.04
repositories. It's version reads "8.8.1+dfsg1+is+8.6.5+dfsg1-3". At
first glance it seems like it would install GHC 8.8.1, but it actually
packages GHC 8.6.5 (like it promises after the +is).

Are there any plans to make it actually package 8.8.1? More
fundamentally, what's the reason for including "xxx+is+yyy" packages?

Cheers,
Martijn