[Nix-dev] Help me understand how to fix this installation (haskell package roman-numerals)

[Benno Fünfstück]

Hi,

cabal2nix will pick it up automatically, but you have to run cabal update
first.

Am 07.11.2014 21:22 schrieb "Carlo Nucera" <meditans at gmail.com>:
>
> Ok, the author was very kind and fast and released on hackage the new
version without that bound.
> Now, how can I clear the cache of cabal2nix? When I try
cabal://roman-numerals it still get the precedent version (I'm guessing it'
cached because I don't see the usual downloading trace)
>
> 2014-11-07 19:51 GMT+01:00 Peter Simons <simons at cryp.to>:
>>
>> Hi Carlo,
>>
>>  > Configuring roman-numerals-0.5.1.4...
>>  > Setup: At least the following dependencies are missing:
>>  > text >=0.11 && <1.2
>>
>> it would be great if you could contact the authors of that package to
>> inform them about this issue so that they can release an update.
>>
>> Meanwhile, you can probably work around the build failure by adding the
>> flag "--jailbreak" to the cabal2nix command line when generating the
>> expression. This will make the build ignore the upper boundary.
>>
>>
>>  > Should I package also a version of text pre 1.2.0.0? What are naming
>>  > conventions in this case?
>>
>> We have versions 0.11.0.5, 0.11.0.6, 0.11.1.5, 0.11.2.0, 0.11.2.3,
>> 0.11.3.1, and 1.1.1.3 packaged in Nix already. Generally speaking,
>> though, you should almost always avoid using an older version. It's much
>> better for everyone to make the package build with the most recent
>> version (which is oftentimes just a matter of ignoring the restrictions
>> from the Cabal file).
>>
>> Best regards,
>> Peter
>>
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>
>
>
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