[xmonad] xmonad: xmonad-extras 0.12 fails to build

[Carlos López-Camey]

Hi Dave, by the results of hoogle *, it looks like (<*) is defined in
Applicative. I think Applicative is a super class of Monad in newer GHC and
is now included in the Prelude. So, I believe it would be safe to just
remove it.

*
https://www.haskell.org/hoogle/?hoogle=Monad+m+%3D%3E+m+a+-%3E+m+b+-%3E+m+a

Cheers

2015-04-09 21:55 GMT-06:00 Dave Macias <davama at gmail.com>:

> Thanks for responding Brent.
>
> Not very good at haskell myself.
> Im looking at the XMonad.Actions.Volume and there i find:
>
> infixl 1 <*
> (<*) :: Monad m => m a -> m b -> m a
> pa <* pb = pa >>= \a -> pb >> return a
>
> I'm assuming this is what you were referring to for solution (1). I've
>  been trying to play with it but i get mixed errors when building, how do i
> rename?
> Here is the code just in case im looking at it wrong:
>
> https://hackage.haskell.org/package/xmonad-extras-0.12/src/XMonad/Actions/Volume.hs
>
> I also plan to email the maintainer, but i would like to have this work
> for educational purposes.
>
> Thanks,
> Dave
>
> On Thu, Apr 9, 2015 at 10:04 AM, Brent Yorgey <byorgey at gmail.com> wrote:
>
>> It looks like XMonad.Actions.Volume defines an operator (<*), but as of
>> base-4.8 an operator with that name has been added to the Prelude.  The fix
>> would be to either (1) rename the operator in XMonad.Actions.Volume, or (2)
>> hide the operator from Prelude and tell everyone who wants to use
>> XMonad.Actions.Volume.(<*) that they need to hide it from Prelude too.
>>
>> xmonad-extras is not officially a part of the xmonad project; you should
>> contact the maintainers listed at
>> http://hackage.haskell.org/package/xmonad-extras .
>>
>> -Brent
>>
>> On Mon, Apr 6, 2015 at 11:45 PM Dave Macias <davama at gmail.com> wrote:
>>
>>> This is my first time posting here so i hope im doing this right.
>>> Just updated ghc to 7.10.1 and had to rebuild xmonad, xmonad-contrib,
>>> and xmobar.
>>> I also use xmonad-extras but it failed during the build. I tried using
>>> cabal and also from source but both give same output:
>>>
>>> $ cabal install xmonad-extras
>>>
>>> Resolving dependencies...
>>> Configuring xmonad-extras-0.12...
>>> Building xmonad-extras-0.12...
>>> Failed to install xmonad-extras-0.12
>>> Build log ( /home/dvmacias/.cabal/logs/xmonad-extras-0.12.log ):
>>> Configuring xmonad-extras-0.12...
>>> Building xmonad-extras-0.12...
>>> Preprocessing library xmonad-extras-0.12...
>>> [1 of 2] Compiling XMonad.Util.WindowPropertiesRE (
>>> XMonad/Util/WindowPropertiesRE.hs,
>>> dist/build/XMonad/Util/WindowPropertiesRE.o )
>>> [2 of 2] Compiling XMonad.Actions.Volume ( XMonad/Actions/Volume.hs,
>>> dist/build/XMonad/Actions/Volume.o )
>>>
>>> XMonad/Actions/Volume.hs:173:23:
>>>     Ambiguous occurrence ‘<*’
>>>     It could refer to either ‘XMonad.Actions.Volume.<*’,
>>>                              defined at XMonad/Actions/Volume.hs:66:4
>>>                           or ‘Prelude.<*’,
>>>                              imported from ‘Prelude’ at
>>> XMonad/Actions/Volume.hs:15:8-28
>>>                              (and originally defined in ‘GHC.Base’)
>>>
>>> XMonad/Actions/Volume.hs:173:43:
>>>     Ambiguous occurrence ‘<*’
>>>     It could refer to either ‘XMonad.Actions.Volume.<*’,
>>>                              defined at XMonad/Actions/Volume.hs:66:4
>>>                           or ‘Prelude.<*’,
>>>                              imported from ‘Prelude’ at
>>> XMonad/Actions/Volume.hs:15:8-28
>>>                              (and originally defined in ‘GHC.Base’)
>>>
>>> XMonad/Actions/Volume.hs:200:62:
>>>     Ambiguous occurrence ‘<*’
>>>     It could refer to either ‘XMonad.Actions.Volume.<*’,
>>>                              defined at XMonad/Actions/Volume.hs:66:4
>>>                           or ‘Prelude.<*’,
>>>                              imported from ‘Prelude’ at
>>> XMonad/Actions/Volume.hs:15:8-28
>>>                              (and originally defined in ‘GHC.Base’)
>>>
>>> XMonad/Actions/Volume.hs:215:32:
>>>     Ambiguous occurrence ‘<*’
>>>     It could refer to either ‘XMonad.Actions.Volume.<*’,
>>>                              defined at XMonad/Actions/Volume.hs:66:4
>>>                           or ‘Prelude.<*’,
>>>                              imported from ‘Prelude’ at
>>> XMonad/Actions/Volume.hs:15:8-28
>>>                              (and originally defined in ‘GHC.Base’)
>>>
>>> XMonad/Actions/Volume.hs:225:58:
>>>     Ambiguous occurrence ‘<*’
>>>
>>>     It could refer to either ‘XMonad.Actions.Volume.<*’,
>>>                              defined at XMonad/Actions/Volume.hs:66:4
>>>                           or ‘Prelude.<*’,
>>>                              imported from ‘Prelude’ at
>>> XMonad/Actions/Volume.hs:15:8-28
>>>                              (and originally defined in ‘GHC.Base’)
>>> cabal: Error: some packages failed to install:
>>> xmonad-extras-0.12 failed during the building phase. The exception was:
>>> ExitFailure 1
>>>
>>>
>>> I got to look at the log but it just has what i pasted above. System is
>>> Arch 3.19.2-1-ARCH
>>>
>>> Any input is appreciated.
>>> Thanks
>>> dave
>>> _______________________________________________
>>> xmonad mailing list
>>> xmonad at haskell.org
>>> http://mail.haskell.org/cgi-bin/mailman/listinfo/xmonad
>>>
>>
>
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