search

ekmett / lens

Lenses, Folds, and Traversals - Join us on web.libera.chat #haskell-lens
http://lens.github.io/
Other
2.03k stars 271 forks source link

`Contains` instances with ConstraintKinds cause issues on GHC 7.4 #356

Closed startling closed 10 years ago

startling commented 10 years ago

See this instance from tables: when we try building tables on 7.4, we get errors like this -- if we switch on -XConstraintKinds, we get errors like this instead.

ekmett commented 10 years ago

Blech. Do we want to go back to the old style of Contains? Or do we want to consider making the few examples that can write back use a different combinator?

ekmett commented 10 years ago

Wait, reopened? We don't use ConstraintKinds any more.

glguy commented 10 years ago

I accidentally clicked close when I meant to close the window. I thought it was probably appropriate to close the issue, but I had other things going on and didn't want to casually discard someone's reported issue.

ekmett commented 10 years ago

Ok. It well and truly belongs closed. =)