[Haskell-cafe] Module name to package name index

Michael Snoyman michael at snoyman.com
Sun Mar 13 14:20:40 UTC 2016

You can see a list of all modules for each Stackage snapshot, eg


On Sun, Mar 13, 2016, 2:11 PM Harendra Kumar <harendra.kumar at gmail.com>

> Is there something available which can answer questions like this -  what
> all packages on Hackage export "Data.List" module? Another useful question
> could be - what all packages export symbol named 'x'? Hackage search or
> hoogle are not helpful in providing a precise answer to these.
> I am assuming that related functionality usually lands up in the same part
> of the module namespace. This fact can help us in discovering related or
> alternative packages or functions available in a given area. For example
> when I am looking for list related functions I can search for who all
> exports "Data.List".
> I guess creating such an index should not be difficult. All the necessary
> information is available in the packages' .cabal files, we just need to
> extract it and create a module name to package name index.
> -harendra
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