id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
1463,Module → Package lookup in ghc-pkg?,dmhouse@…,,"Hi all,

I'm writing code for Emacs's haskell-mode, and it's necessary at one point to be able to find out the package a given module is defined in. The only way of doing this currently is to call ghc-pkg field <package> exposed-modules for every package, then building a lookup table of modules to packages. Could we have one of:

 1. A way to batch call ghc-pkg once to fetch the exposed-modules (or any field, in fact, as we need to fetch haddock-html for each package as well) for all packages?
 2. A way to lookup which package(s) a given module is defined in from ghc-pkg?

Cheers,

-David House",feature request,closed,normal,6.10 branch,Compiler,6.6.1,fixed,,,Unknown/Multiple,Unknown/Multiple,,Unknown,,,,