Axel Simon <axel.si...@in.tum.de> writes:
> I think the trick is to add another flag: OverlappingInstances
Looks can't work, new error after add `OverlappingInstances`:
------------------------------> error start <------------------------------
System/Gnome/GConf/GConfValue.chs:63:33:
Ambiguous type variable `value' in the constraint:
`GConfValueClass value'
arising from a use of `typeofGConfValue'
at System/Gnome/GConf/GConfValue.chs:63:33-67
Probable fix: add a type signature that fixes these type variable(s)
System/Gnome/GConf/GConfValue.chs:92:23:
Ambiguous type variable `value1' in the constraint:
`GConfValueClass value1'
arising from a use of `typeofGConfValue'
at System/Gnome/GConf/GConfValue.chs:92:23-59
Probable fix: add a type signature that fixes these type variable(s)
System/Gnome/GConf/GConfValue.chs:184:22:
Ambiguous type variable `a' in the constraint:
`GConfValueClass a'
arising from a use of `typeofGConfValue'
at System/Gnome/GConf/GConfValue.chs:184:22-54
Probable fix: add a type signature that fixes these type variable(s)
System/Gnome/GConf/GConfValue.chs:194:33:
Ambiguous type variable `a1' in the constraint:
`GConfValueClass a1'
arising from a use of `typeofGConfValue'
at System/Gnome/GConf/GConfValue.chs:194:33-63
Probable fix: add a type signature that fixes these type variable(s)
------------------------------> error end <------------------------------
Can you help me test gconf package? Thanks
I'm converting other packages.....
-- Andy
>
> Cheers,
> Axel
>
> On 22.04.2010, at 10:34, Andy Stewart wrote:
>
>> Hi Duncan,
>>
>> I'm try to convert gconf to Cabal package, below is package:
>>
>> <gconf.tar.gz>
>> When i compile first, i got below error:
>> ------------------------------> first error start
>> <------------------------------
>> System/Gnome/GConf/GConfValue.chs:106:0:
>> Illegal instance declaration for `GConfPrimitiveValueClass String'
>> (All instance types must be of the form (T t1 ... tn)
>> where T is not a synonym.
>> Use -XTypeSynonymInstances if you want to disable this.)
>> In the instance declaration for `GConfPrimitiveValueClass String'
>>
>> System/Gnome/GConf/GConfValue.chs:138:0:
>> Illegal instance declaration for `GConfValueClass String'
>> (All instance types must be of the form (T t1 ... tn)
>> where T is not a synonym.
>> Use -XTypeSynonymInstances if you want to disable this.)
>> In the instance declaration for `GConfValueClass String'
>> ------------------------------> first error end
>> <------------------------------
>>
>> So i add `{-# LANGUAGE CPP, TypeSynonymInstances #-}` in GConfValue.chs.
>> But i got another error:
>>
>> ------------------------------> error start <------------------------------
>> System/Gnome/GConf/GConfValue.chs:106:9:
>> Overlapping instances for GConfValueClass String
>> arising from the superclasses of an instance declaration
>> at System/Gnome/GConf/GConfValue.chs:106:9-39
>> Matching instances:
>> instance GConfValueClass String
>> -- Defined at System/Gnome/GConf/GConfValue.chs:138:9-30
>> instance (GConfPrimitiveValueClass a) => GConfValueClass [a]
>> -- Defined at System/Gnome/GConf/GConfValue.chs:172:9-57
>> In the instance declaration for `GConfPrimitiveValueClass String'
>>
>> System/Gnome/GConf/GConfValue.chs:320:29:
>> Overlapping instances for GConfValueClass String
>> arising from a use of `marshalToGConfValue'
>> at System/Gnome/GConf/GConfValue.chs:320:29-50
>> Matching instances:
>> instance GConfValueClass String
>> -- Defined at System/Gnome/GConf/GConfValue.chs:138:9-30
>> instance (GConfPrimitiveValueClass a) => GConfValueClass [a]
>> -- Defined at System/Gnome/GConf/GConfValue.chs:172:9-57
>> In the expression: marshalToGConfValue v'
>> In a case alternative:
>> (GConfValueString v') -> marshalToGConfValue v'
>> In the expression:
>> case v of {
>> (GConfValueString v') -> marshalToGConfValue v'
>> (GConfValueInt v') -> marshalToGConfValue v'
>> (GConfValueFloat v') -> marshalToGConfValue v'
>> (GConfValueBool v') -> marshalToGConfValue v'
>> (GConfValueSchema)
>> -> fail "GConf: setting schema types not supported"
>> (GConfValueList v') -> marshalGConfValueDynListToGConfValue v'
>> (GConfValuePair v') -> marshalGConfValueDynPairToGConfValue v' }
>> ------------------------------> error end <------------------------------
>>
>> Something looks wrong.
>> And i don't know the detail of gconf binding, can you help me fix it?
>>
>> Thanks,
>>
>> -- Andy
>>
>> ------------------------------------------------------------------------------
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>> Gtk2hs-devel@lists.sourceforge.net
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