[Haskell-beginners] Issue installing reactive-banana-5.0.0.1

[Miguel Negrao]

A 01/05/2012, às 21:19, Miguel Negrao escreveu:

> 
> A 01/05/2012, às 19:24, Heinrich Apfelmus escreveu:
> 
>> Miguel Negrao wrote:
>>> Since I have wxWidgets 2.9.3 installed already I might as well give
>>> it a try with reactive-banana-0.6. I installed wx-0.90 and
>>> wxcore-0.90 and reactive-banana-0.6.0 (from git) without issues. I
>>> couldn’t install reactive-banana-wx though, I get this error:
>>> Configuring MissingH-1.1.1.0...
>>> Warning: This package indirectly depends on multiple versions of the same
>>> package. This is highly likely to cause a compile failure.
>>> package regex-base-0.93.2 requires mtl-2.0.1.0
>>> package parsec-3.1.1 requires mtl-2.0.1.0
>>> package parsec-3.1.1 requires mtl-2.1
>>> package hslogger-1.1.5 requires mtl-2.1
>>> package MissingH-1.1.1.0 requires mtl-2.1
>>> package MissingH-1.1.1.0 requires parsec-3.1.1
>>> package network-2.3.0.5 requires parsec-3.1.1
>>> package mtl-2.0.1.0 requires transformers-0.2.2.0
>>> package mtl-2.1 requires transformers-0.3.0.0
>>> Preprocessing library MissingH-1.1.1.0...
>>> Preprocessing executables for MissingH-1.1.1.0...
>>> Building MissingH-1.1.1.0...
>>> <command line>: cannot satisfy -package-id parsec-3.1.1-178bb186a8cbec1a8bf6b3192212c18e:    parsec-3.1.1-178bb186a8cbec1a8bf6b3192212c18e is shadowed by package parsec-3.1.1-fb91ea6e6c1f9c50292782ec985e5f9a
>>>  (use -v for more information)
>>> Updating documentation index
>>> /Users/miguelnegrao/Library/Haskell/doc/index.html
>>> cabal: Error: some packages failed to install:
>>> MissingH-1.1.1.0 failed during the building phase. The exception was:
>>> ExitFailure 1
>>> cabal-macosx-0.2 depends on MissingH-1.1.1.0 which failed to install.
>>> reactive-banana-wx-0.6.0.0 depends on MissingH-1.1.1.0 which failed to
>>> install.
>> 
>> Fortunately, this time it's not my fault. :)
>> 
>> You ran into a cabal problem with a package depending on multiple versions of the same package. The culprit seems to be  regex-base . I suggest you try
>> 
>>   cabal install regex-base parsec-3.1.1 \
>>       --reinstall --constraint='mtl == 2.1'
>> 
>> to resolve this issue.
> 
> That installs regex-base-0.93.2 with no errors.
> 
>> Then try installing  reactive-banana-wx  again.
> 
> But then I get the same error installing reactive-banana-wx.

cabal install regex-base parsec-3.1.1 MissingH --reinstall --constraint='mtl == 2.1’

With this command it installs correctly, I can now run all the examples. All seem to work fine except CRUD that crashed at some point.

I will now start exploring.

thanks,
Miguel