Expose listPackageConfigMap

This is useful for code that needs to search the package config map for
packages satisfying a certain condition.

Reviewed By: ezyang

Differential Revision: https://phabricator.haskell.org/D695

diff --git a/compiler/main/Packages.hs b/compiler/main/Packages.hs
index e36221b..4f8afb5 100644 (file)
--- a/compiler/main/Packages.hs
+++ b/compiler/main/Packages.hs
@@ -13,6 +13,7 @@ module Packages (
         getPackageConfRefs,
         resolvePackageConfig,
         readPackageConfig,
+        listPackageConfigMap,
 
         -- * Querying the package config
         lookupPackage,