Obligatory: I'm dealing with a package so old that lts-1.0 has a Base too recent for what I'm dealing with. But it's research code whose recent versions have g

Obligatory: I'm dealing with a package so old that lts-1.0 has a Base too recent for what I'm dealing with. But it's research code whose recent versions have gone in a totally different direction from what I need right now, so I have to cope.