diff --git a/hptool/src/PlatformDB.hs b/hptool/src/PlatformDB.hs
index 4e2eb1c..3883e3b 100644
--- a/hptool/src/PlatformDB.hs
+++ b/hptool/src/PlatformDB.hs
@@ -33,12 +33,12 @@ release vstr incs = Release (HpVersion $ version vstr) incs []
 -- | Construct list of Includes as a delta to packages in another release.
 -- The contents of the single list provided are applied to both the core and
 -- the full include lists (since full is just the additions to core with no
--- overlap).
+-- overlap). Note that this will only _update_ packages, not provide new ones.
 deltaFrom :: Release -> [Include] -> ([Include], [Include])
 deltaFrom base deltas = ( go (relMinimalIncludes base) deltas
                         , go (relIncludes base) deltas )
   where
-    go []             dIncs = dIncs
+    go []             dIncs = [] --dIncs
     go (bInc : bIncs) dIncs =
         let (updates, dIncs') = partition (match bInc) dIncs
         in merge bInc updates : go bIncs dIncs'
diff --git a/hptool/src/Releases2017.hs b/hptool/src/Releases2017.hs
index 02f0bf5..e89a1dd 100644
--- a/hptool/src/Releases2017.hs
+++ b/hptool/src/Releases2017.hs
@@ -121,6 +121,7 @@ hp_8_2_2 =
         and as such, do not carry the same stability guaruntees.
         , incGHCLib "ghc-prim"              "0.5.1.1"
         -}
+
         , incTool "alex"                    "3.2.3"
         , incTool "happy"                   "1.19.8"
 
@@ -128,6 +129,9 @@ hp_8_2_2 =
         , incLib "HTTP"                     "4000.3.8"
         , incLib "QuickCheck"               "2.10.1"
         , incLib "scientific"               "0.3.5.2"
+
+        , incGHCTool "cabal-install"        "2.0.0.1"
+        , incGHCTool "stack"                "1.6.1"
         ]