[Haskell-cafe] name lists

[Ben Gamari]

Roman Cheplyaka <roma at ro-che.info> writes:

> * Ben Gamari <bgamari.foss at gmail.com> [2013-09-17 10:03:41-0400]
>> Another approach might be to introduce some notion of a name list which
>> can appear in the export list. These lists could be built up by either
>> user declarations in the source module or in Template Haskell splices
>> and would serve as a way to group logically related exports. This
>> would allow uses such as (excuse the terrible syntax),
>
> Hi Ben,
>
> Isn't this subsumed by ordinary Haskell modules, barring the current
> compilers' limitation that modules are in 1-to-1 correspondence with
> files (and thus are somewhat heavy-weight)?
>
> E.g. the above could be structured as
>
>   module MyDataLenses where
>     data MyData = MyData { ... }
>     makeLenses ''MyData
>
>   module HelloWorld (module MyDataLenses, ...) where
>     ...
>
True. Unfortunately I've not seen much motion towards relaxing this
limitation[1].

Cheers,

- Ben


[1] http://ghc.haskell.org/trac/ghc/ticket/2551
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