[Haskell-cafe] How to find unused exported symbols?

John D. Ramsdell ramsdell0 at gmail.com
Mon Feb 15 23:19:49 EST 2010

I wonder if I should use the GHC API to do this.  I notice there is a
module called BinIface that contains a reader for interface files.
The trouble is you have to figure out how to initialize a program that
uses the module, and that seems to be difficult.  I couldn't find
anything relevant on the Wiki.


On Mon, Feb 15, 2010 at 10:42 PM, Ivan Miljenovic
<ivan.miljenovic at gmail.com> wrote:
> On 16 February 2010 02:22, John D. Ramsdell <ramsdell0 at gmail.com> wrote:
>> I would like to find symbols exported from each module in a program
>> that are not used outside the module.  I'm worried my program is
>> accumulating cruft.  I'm looking for suggestions on how to find unused
>> exported symbols.  Do I have to analyse .hi files?  Thanks in advance.
> -Wall will tell you which entities in are module are top-level but not
> exported; my SourceGraph program (available from Hackage) will tell
> you which entities in the entire project are top-level but not
> exported.  Note that at the moment the output is rather ugly....
> --
> Ivan Lazar Miljenovic
> Ivan.Miljenovic at gmail.com
> IvanMiljenovic.wordpress.com
> Mike Ditka  - "If God had wanted man to play soccer, he wouldn't have
> given us arms." -
> http://www.brainyquote.com/quotes/authors/m/mike_ditka.html

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