Test reexporting locally defined exposed module.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

Cabal/Cabal.cabal

@@ -209,6 +209,8 @@ extra-source-files:
   tests/PackageTests/PreProcessExtraSources/my.cabal
   tests/PackageTests/ReexportedModules/containers-dupe/Data/Map.hs
   tests/PackageTests/ReexportedModules/containers-dupe/containers-dupe.cabal
+  tests/PackageTests/ReexportedModules/p/Private.hs
+  tests/PackageTests/ReexportedModules/p/Public.hs
   tests/PackageTests/ReexportedModules/p/fail-ambiguous.cabal
   tests/PackageTests/ReexportedModules/p/fail-missing.cabal
   tests/PackageTests/ReexportedModules/p/fail-other.cabal

Cabal/tests/PackageTests/ReexportedModules/p/Private.hs

+module Private where
+modname = "Private"

Cabal/tests/PackageTests/ReexportedModules/p/Public.hs

+module Public where
+modname = "Public"

Cabal/tests/PackageTests/ReexportedModules/p/p.cabal

@@ -6,8 +6,12 @@ build-type:          Simple
 cabal-version:       >=1.21
 
 library
+  exposed-modules:     Public
+  other-modules:       Private
   build-depends:       base, containers
   reexported-modules:  containers:Data.Map as DataMap,
                        Data.Graph,
                        Data.Set as Set,
-                       containers:Data.Tree
+                       containers:Data.Tree,
+                       Public as Republic
+                       -- NB: Private is not reexportable

Cabal/tests/PackageTests/ReexportedModules/q/A.hs

@@ -3,3 +3,5 @@ import DataMap
 import Data.Graph
 import Set
 import Data.Tree
+import Public
+import Republic