Hi Carter,

I finally had the chance to test this on my personal laptop, where I was pretty much free on which version of Cabal/haddock to use.
Installing a fresh haddock, and using Cabal-1.20.0.3 (but I suspect it doesn’t matter), “cabal haddock” worked just fine on one of my
libraries.

A.

On Wednesday, 24 December 2014, Carter Schonwald <carter.schonwald@gmail.com> wrote:
> or worse case, just cabal install haddock and that will work fine
> On Wed, Dec 24, 2014 at 12:56 PM, Carter Schonwald <carter.schonwald@gmail.com> wrote:
>
> try rm ~/.cabal/bin/haddock 
> and then type which haddock and you should be getting the /usr/local/bin/haddock or whatever, then stuff should work fine
> On Wed, Dec 24, 2014 at 11:40 AM, Alfredo Di Napoli <alfredo.dinapoli@gmail.com> wrote:
>
> The installation succeedeed and GHC is working correctly.
> But yes, "cabal haddock" seems to have some difficulty in the new version, but I can't judge if it's my sandboxed environment (we use "hub" at work) or the failure you mentioned.
>
> Calling "haddock" alone works (using the previously installed on my system), "cabal haddock" does not:
>
> ☁  mandrill [master] ⚡ haddock src/Network/API/Mandrill.hs
> Haddock coverage:
> Warning: main:Network.API.Mandrill: Could not find documentation for exported module: M
> Warning: Couldn't find .haddock for export Control.Monad.IO.Class.liftIO
>  88% (  7 /  8) in 'Network.API.Mandrill'
> Warning: Network.API.Mandrill: could not find link destinations for:
>    Control.Monad.IO.Class.MonadIO Network.API.Mandrill.Types.MandrillMessage Network.API.Mandrill.Trans.MandrillT Network.API.Mandrill.Types.MandrillResponse Network.API.Mandrill.Messages.Types.MessagesResponse Text.Email.Parser.EmailAddress Data.Text.Internal.Text Text.Blaze.Html.Html GHC.Types.IO
>
> ☁  mandrill [master] ⚡ cabal haddock
> cabal-1.20.0.0: You need to re-run the 'configure' command. The version of
> Cabal being used has changed (was Cabal-1.18.1.5, now Cabal-1.20.0.0).
> cabal haddock: /usr/hs/tools/cabal-1.20.0.0 failure (return code=1)
>
> On Wednesday, 24 December 2014, Carter Schonwald <carter.schonwald@gmail.com> wrote:
>> sure, please verify first.  (also make sure haddock etc works for you, i had to remove a haddock binary from ~/.cabal/bin before haddocks were building correctly for me)
>> On Wed, Dec 24, 2014 at 10:52 AM, Alfredo Di Napoli <alfredo.dinapoli@gmail.com> wrote:
>>
>> Thanks Carter!
>>
>> I have just asked basically about it on Reddit, in the announce thread.
>> I'll give it a spin, and if it works I will share the link (if you are ok with that!) on the
>> same Reddit post.
>>
>> Alfredo
>>
>> On Tuesday, 23 December 2014, Carter Schonwald <carter.schonwald@gmail.com> wrote:
>>> Heres a OS X build that should work with >= 10.7
>>> http://www.wellposed.com/opensource/ghc/releasebuild-unofficial/ghc-7.8.4-x86_64-apple-darwin.tar.bz2
>>>
>>> and the sha 512 
>>> shasum -a512 ghc-7.8.4-x86_64-apple-darwin.tar.bz2
>>> c6e76a2cd7ec7820d071ef1f417981845bb86c4c8337a57431136a375cbd0695fe810ec10963109ab1971d1a0ab80318c62d71b95eddb5657800cac296a260bd  ghc-7.8.4-x86_64-apple-darwin.tar.bz2
>>> On Tue, Dec 23, 2014 at 8:12 AM, Austin Seipp <austin@well-typed.com> wrote:
>>>
>>> ==============================================================
>>>     The (Interactive) Glasgow Haskell Compiler -- version 7.8.4
>>> ==============================================================
>>>
>>> The GHC Team is pleased to announce a new patchlevel release of GHC, 7.8.4.
>>>
>>> This is an important bugfix release relative to 7.8.3 (with over 30
>>> defects fixed), so we highly recommend upgrading from the previous 7.8
>>> releases.
>>>
>>> The full release notes are here:
>>>
>>>   https://downloads.haskell.org/~ghc/7.8.4/docs/html/users_gui