write hosts file to cache.

1 files changed, 10 insertions, 2 deletions

diff --git a/lib/KeyRing.hs b/lib/KeyRing.hs
index fbd23fe..04ac7c6 100644
--- a/lib/KeyRing.hs
+++ b/lib/KeyRing.hs
@@ -107,6 +107,8 @@ module KeyRing
 
 import System.Environment
 import Control.Monad
+import Control.Exception ( catch )
+import System.IO.Error ( isDoesNotExistError )
 import Data.Maybe
 import Data.Either
 import Data.Char
@@ -137,7 +139,7 @@ import Data.Text.Encoding ( encodeUtf8 )
 import qualified Data.Map as Map
 import qualified Data.ByteString.Lazy as L ( unpack, null, readFile, writeFile
         , ByteString, toChunks, hGetContents, hPut, concat, fromChunks, splitAt
-        , index, break, pack )
+        , index, break, pack, empty )
 import qualified Data.ByteString      as S ( ByteString, unpack, splitAt, concat, cons, spanEnd, hGetContents, readFile, breakSubstring, drop, length, null, hPutStr, singleton, unfoldr, reverse )
 import qualified Codec.Binary.Base32 as Base32
 import qualified Codec.Binary.Base64 as Base64
@@ -1354,7 +1356,13 @@ mergeHostFiles krd db ctx = do
             guard (istyp $ typ stream)
             return f
 
-    hostdbs0 <- mapM (fmap Hosts.decode . readInputFileL ctx) hns
+        readInputFileL' ctx f =
+            readInputFileL ctx f
+                `catch` \e -> do when (not $ isDoesNotExistError e) $ do
+                                   return () -- todo report problem
+                                 return L.empty
+
+    hostdbs0 <- mapM (fmap Hosts.decode . readInputFileL' ctx) hns
 
     let gpgnames = map getHostnames $ Map.elems db
         os = do