cabal repl failing silently on missing exposed-modules

[cheater00 .]

The simplest thing to fix your case might be to emit an error when a
library is built with no exposed-modules (why would you build it
otherwise?)

On Wed, Aug 6, 2014 at 7:53 PM, Alois Cochard <alois.cochard at gmail.com> wrote:
> Hi,
>
> I'm not sure if that relate to this problem so please ignore me if not.
>
> I had to spend quite a lot of time understanding what the issue had, when as
> you I had forget to add an entry for `exposed-modules` and trying to
> build...
> Basically I had an error saying that a symbol was missing or something like
> that (can remember the exact message), but every time I have that issue it
> take me a while to realise I have forget the entry...
>
> I think it's not a type error, it's kind of a linking error maybe that's why
> the repl fail silently.
>
> Anyway, I was wondering if it would be possible to give a more helpful error
> message in such case.
>
> Cheers
>
>
>
>
> On 6 August 2014 15:18, cheater00 . <cheater00 at gmail.com> wrote:
>>
>> Hi,
>> I have just spent some time trying to figure out why all of a sudden
>> "cabal repl" silently exits without an error message. What helped was
>> to take a project that could launch the repl and compare the cabal
>> files to my new project. It turns out the exposed-modules entry was
>> missing. I was wondering whether this behaviour was intentional, as I
>> don't recollect this happening before, but I don't have older systems
>> to test this on.
>>
>> The reason I wanted to run a repl without editing exposed modules was
>> to test some dependencies I pulled in to the sandbox with cabal
>> install. The package in question didn't have any code of its own yet.
>> In this case I would just expect ghci to load with the Prelude.
>>
>> Thanks!
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>> Glasgow-haskell-users at haskell.org
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>
>
>
>
> --
> Λ\ois
> http://twitter.com/aloiscochard
> http://github.com/aloiscochard