cabal repl failing silently on missing exposed-modules

Alois Cochard alois.cochard at
Wed Aug 6 17:53:36 UTC 2014


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
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.


On 6 August 2014 15:18, cheater00 . <cheater00 at> 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!
> _______________________________________________
> Glasgow-haskell-users mailing list
> Glasgow-haskell-users at

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the Glasgow-haskell-users mailing list