ghc-mod/Language
Naohiro Aota 46492a19b0 Expose packages in sandbox with their ids
This commit implement scaning a package db directory to collect package
id

If you installed a package both in a sandbox and globally, global
package may be selected even if there's a package in a sandbox, which is
different behavior from cabal sandbox.

e.g. when you have fast-logger-2.0 globally and fast-logger-0.3.3 in a
sandbox:

(Without patch)
$ ghc-mod check Foundation.hs
Foundation.hs:12:31:Module `System.Log.FastLogger' does not export `Logger'

(With patch)
$ ghc-mod check Foundation.hs
2014-01-30 21:21:40 +09:00
..
Haskell Expose packages in sandbox with their ids 2014-01-30 21:21:40 +09:00