1 files changed, 4 insertions, 3 deletions

diff --git a/fsmgr.hs b/fsmgr.hs
index 948ef8b..834ab4a 100644
--- a/fsmgr.hs
+++ b/fsmgr.hs
@@ -147,6 +147,10 @@ buildRoot config@DiskImageConfig{..} finalOut = do
     {- 1. debconf -}
     forM_ debconfConfig $
       readFile' >=> liftIO . appendFile (mountpoint </> "var/cache/debconf/config.dat")
+    {- 1.5. install apt package cache -}
+    when installAptLists $ do
+      cmd_ "rsync -Ra" (("/./" ++) <$> aptListFiles aptListCfg) (mountpoint ++ "/")
+      cmd_ "chroot" [mountpoint] "/bin/sh -c" ["apt-cache dumpavail | dpkg --update-avail -"]
     {- 2. dpkg installs -}
     let (fmap dynamicNames -> debs, packageNames) = partitionPackages $ unpack . coerce <$> toList packages
     when (noParent initialImage || not (null packageNames)) $
@@ -158,9 +162,6 @@ buildRoot config@DiskImageConfig{..} finalOut = do
       need debs
       cmd_ (AddEnv "DEBIAN_FRONTEND" "noninteractive")
            ["dpkg"] [if unpackOnly then "--unpack" else "--install"] ["--root", mountpoint] debs
-    {- 2.5. install apt package cache -}
-    when installAptLists $ do
-      cmd_ "rsync -Ra" (("/./" ++) <$> aptListFiles aptListCfg) (mountpoint ++ "/")
     {- 3. binaries -}
     let go b = do
           p <- fromMaybe (fail $ "not found in ${PATH}: " ++ b) <$> liftIO (pathLocate b)