While debugging it with Taylan on IRC, it occurred to us that guix/build-system/haskell.scm wasn’t getting installed, which is fixed by ce6fc7d. Can you confirm that this solves the problem?
Anyway, I recommend against using repeated “make install”, one reason being that there can be leftovers if you don’t run “make uninstall” beforehand. “guix pull” is meant to be a handy way to deal with updates. I agree there are shortcomings (notably on my to-do list is the idea to switch it from doing a full download to using git), but we should discuss them and find a list of actions to take to address them. Ludo’.
