3 files changed, 10 insertions, 2 deletions
diff --git a/src/CabalHelper/Compiletime/Types.hs b/src/CabalHelper/Compiletime/Types.hs
index 58e90b1..e803ae6 100644
--- a/src/CabalHelper/Compiletime/Types.hs
+++ b/src/CabalHelper/Compiletime/Types.hs
@@ -146,6 +146,9 @@ data UnitInfo = UnitInfo
     { uiUnitId                :: !UnitId
     -- ^ A unique identifier of this init within the project.
 
+    , uiPackageId             :: !(String, Version)
+    -- ^ The package-name and version this unit belongs to.
+
     , uiComponents            :: !(Map ChComponentName ChComponentInfo)
     -- ^ The components of the unit: libraries, executables, test-suites,
     -- benchmarks and so on.
diff --git a/src/CabalHelper/Runtime/Main.hs b/src/CabalHelper/Runtime/Main.hs
index 3a363a3..d0eea1a 100644
--- a/src/CabalHelper/Runtime/Main.hs
+++ b/src/CabalHelper/Runtime/Main.hs
@@ -306,6 +306,11 @@ main = do
 
   print =<< flip mapM cmds $$ \x -> do
   case x of
+    "package-id":[] ->
+      return $ Just $ ChResponseVersion $ (,)
+        (display (packageName gpd))
+        (toDataVersion (packageVersion gpd))
+
     "flags":[] -> do
       return $ Just $ ChResponseFlags $ sort $
         map (flagName' &&& flagDefault) $ genPackageFlags gpd
@@ -344,7 +349,7 @@ main = do
 
     "compiler-version":[] -> do
       let CompilerId comp ver = compilerId $ compiler lbi
-      return $ Just $ ChResponseVersion (show comp) (toDataVersion ver)
+      return $ Just $ ChResponseVersion $ (,) (show comp) (toDataVersion ver)
 
     "package-db-stack":[] -> do
       let
diff --git a/src/CabalHelper/Shared/InterfaceTypes.hs b/src/CabalHelper/Shared/InterfaceTypes.hs
index 0539b96..ae72f3f 100644
--- a/src/CabalHelper/Shared/InterfaceTypes.hs
+++ b/src/CabalHelper/Shared/InterfaceTypes.hs
@@ -41,7 +41,7 @@ data ChResponse
     | ChResponseList           [String]
     | ChResponsePkgDbs         [ChPkgDb]
     | ChResponseLbi            String
-    | ChResponseVersion        String Version
+    | ChResponseVersion        (String, Version)
     | ChResponseLicenses       [(String, [(String, Version)])]
     | ChResponseFlags          [(String, Bool)]
   deriving (Eq, Ord, Read, Show, Generic)