Expander/collapser ids can conflict to easily

[harpocrates]

We do some work to generate HTML id's in a deterministic fashion. However, we're not trying hard enough to make them unique. Here's an example:

module Bug953 where

{- | A foo

==== __Examples__

Foo example body
-}
data Foo = Foo'

{- | A bar

==== __Examples__

Bar example body
-}
data Bar = Bar'

It is impossible to expand the first example section (clicking on the plus expands the second section!) because the two generated HTML elements are given the same ch:noid:0 id.

[harpocrates]

@sjakobi This is what is causing the example section of data [] a to be unexpandable (the Either example gets expanded instead 😄).

[Lysxia]

I think I just got bitten by this: https://hackage.haskell.org/package/generic-data-0.8.0.0/docs/Generic-Data.html#t:FiniteEnum The "Details" link expands an Example link down below instead.

1. Is this the same issue?
2. Is it fixed by the fix that closed this issue?
3. How often does Hackage update Haddock?

[bgamari]

Hackage documentation is regenerated every time a package is uploaded.

However, haddock on the builder is uploaded significantly less frequently. I suspect it hasn't happened since this was fixed. I can check whether I still have permission to do so and will update it if so.