Re: [Haskell-cafe] Stackage with GHC 7.8: build results

10 Apr 2014


      On Thu, Apr 10, 2014 at 9:49 AM, Alexander V Vershilov <
alexander.vershilov@gmail.com> wrote:
...
Hi,
In my testing container it's:
Building yesod-persistent-1.2.2.2...
Preprocessing library yesod-persistent-1.2.2.2...
[1 of 2] Compiling Yesod.Persist.Core ( Yesod/Persist/Core.hs,
dist/build/Yesod/Persist/Core.o )
Yesod/Persist/Core.hs:113:5:
    Could not deduce (Monad (YesodDB site))
      arising from a use of `transPipe'
    from the context (YesodPersistRunner site)
      bound by the type signature for
                 runDBSource :: YesodPersistRunner site =>
                                Source (YesodDB site) a -> Source
(HandlerT site IO) a
      at Yesod/Persist/Core.hs:(108,16)-(110,42)
    In a stmt of a 'do' block: transPipe (runDBRunner dbrunner) src
    In the expression:
      do { (dbrunner, cleanup) <- lift getDBRunner;
           transPipe (runDBRunner dbrunner) src;
           lift cleanup }
    In an equation for `runDBSource':
        runDBSource src
No uhc found
./setup build
Building yesod-persistent-1.2.2.2...
Preprocessing library yesod-persistent-1.2.2.2...
[1 of 2] Compiling Yesod.Persist.Core ( Yesod/Persist/Core.hs,
dist/build/Yesod/Persist/Core.o )
Yesod/Persist/Core.hs:113:5:
    Could not deduce (Monad (YesodDB site))
      arising from a use of `transPipe'
    from the context (YesodPersistRunner site)
      bound by the type signature for
                 runDBSource :: YesodPersistRunner site =>
                                Source (YesodDB site) a -> Source
(HandlerT site IO) a
      at Yesod/Persist/Core.hs:(108,16)-(110,42)
    In a stmt of a 'do' block: transPipe (runDBRunner dbrunner) src
    In the expression:
      do { (dbrunner, cleanup) <- lift getDBRunner;
           transPipe (runDBRunner dbrunner) src;
           lift cleanup }
    In an equation for `runDBSource':
        runDBSource src
          = do { (dbrunner, cleanup) <- lift getDBRunner;
                 transPipe (runDBRunner dbrunner) src;
                 lift cleanup }
--
Alexander Vershilov
On 9 April 2014 11:16, Michael Snoyman  wrote:
...
On Wed, Apr 9, 2014 at 9:15 AM, John Wiegley 
wrote:
...
...
...
...
...
>> Michael Snoyman  writes:
...
* fpco-api (yes, I'm working on it)
* gitlib
* groundhog
* monad-peel
* parsestar
* pcre-light
* recursion-schemes
* statistics
* syb-extras
* thyme
* uniqueid
My own private bootstrapping (unrelated to stackage) has also revealed
these
broken packages:
pcre-light
    categories
    thyme
    recursion-schemes
    yesod-persistent
What build failure are you getting with yesod-persistent? It builds
correctly for me.
Michael
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--
Alexander
The problem is a regression between GHC 7.8.0rc2 (what I was testing with)
and 7.8.1, which had just been released. There's a GHC ticket open on the
issue[1].

Michael

[1] https://ghc.haskell.org/trac/ghc/ticket/8978