Prefer using pointfree style, remove unnecessary parentheses. There
is a bug in hlint (https://github.com/ndmitchell/hlint/issues/196) that
turns the "role" indentifier into a keyword. It can be disabled using
-XNoRoleAnnotations but this flag is not supported by ghc 7.4.x which
is distributed with wheezy. It could be worked around by detecting ghc
version in automake.am, but a much simpler solution is to avoid using
this identifier.

Signed-off-by: Viktor Bachraty <[email protected]>
---
 src/Ganeti/Confd/Server.hs | 18 +++++++++---------
 src/Ganeti/Config.hs       | 10 +++++-----
 src/Ganeti/Query/Node.hs   |  4 ++--
 src/Ganeti/UDSServer.hs    |  2 +-
 4 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/src/Ganeti/Confd/Server.hs b/src/Ganeti/Confd/Server.hs
index 774054b..8eb9182 100644
--- a/src/Ganeti/Confd/Server.hs
+++ b/src/Ganeti/Confd/Server.hs
@@ -104,13 +104,13 @@ nodeRole :: ConfigData -> String -> Result ConfdNodeRole
 nodeRole cfg name = do
   cmaster <- errToResult $ QCluster.clusterMasterNodeName cfg
   mnode <- errToResult $ getNode cfg name
-  let role = case mnode of
-               node | cmaster == name -> NodeRoleMaster
-                    | nodeDrained node -> NodeRoleDrained
-                    | nodeOffline node -> NodeRoleOffline
-                    | nodeMasterCandidate node -> NodeRoleCandidate
-               _ -> NodeRoleRegular
-  return role
+  let nrole = case mnode of
+                node | cmaster == name -> NodeRoleMaster
+                     | nodeDrained node -> NodeRoleDrained
+                     | nodeOffline node -> NodeRoleOffline
+                     | nodeMasterCandidate node -> NodeRoleCandidate
+                _ -> NodeRoleRegular
+  return nrole
 
 -- | Does an instance ip -> instance -> primary node -> primary ip
 -- transformation.
@@ -170,8 +170,8 @@ buildResponse cdata req@(ConfdRequest { confdRqType = 
ReqNodeRoleByName }) = do
   node_name <- case confdRqQuery req of
                  PlainQuery str -> return str
                  _ -> fail $ "Invalid query type " ++ show (confdRqQuery req)
-  role <- nodeRole (fst cdata) node_name
-  return (ReplyStatusOk, J.showJSON role,
+  nrole <- nodeRole (fst cdata) node_name
+  return (ReplyStatusOk, J.showJSON nrole,
           clusterSerial . configCluster $ fst cdata)
 
 buildResponse cdata (ConfdRequest { confdRqType = ReqNodePipList }) =
diff --git a/src/Ganeti/Config.hs b/src/Ganeti/Config.hs
index d908188..cf2f885 100644
--- a/src/Ganeti/Config.hs
+++ b/src/Ganeti/Config.hs
@@ -289,7 +289,7 @@ getInstance cfg name =
 getInstanceByName :: ConfigData -> String -> ErrorResult Instance
 getInstanceByName cfg name =
   let instances = M.elems . fromContainer . configInstances $ cfg
-      matching = F.find (\i -> maybe False (== name) (instName i)) instances
+      matching = F.find (maybe False (== name) . instName) instances
   in case matching of
       Just inst -> Ok inst
       Nothing   -> Bad $ OpPrereqError
@@ -491,9 +491,9 @@ getInstMinorsForNode :: ConfigData
                      -> Instance
                      -> [(String, Int, String, String, String, String)]
 getInstMinorsForNode cfg node inst =
-  let role = if Just node == instPrimaryNode inst
-               then rolePrimary
-               else roleSecondary
+  let nrole = if Just node == instPrimaryNode inst
+                then rolePrimary
+                else roleSecondary
       iname = fromMaybe "" $ instName inst
       inst_disks = case getInstDisksFromObj cfg inst of
                      Ok disks -> disks
@@ -502,7 +502,7 @@ getInstMinorsForNode cfg node inst =
   -- separate place, or reuse the iv_name (but that is deprecated on
   -- the Python side)
   in concatMap (\(idx, dsk) ->
-            [(node, minor, iname, "disk/" ++ show idx, role, peer)
+            [(node, minor, iname, "disk/" ++ show idx, nrole, peer)
                | (minor, peer) <- getDrbdMinorsForNode node dsk]) .
      zip [(0::Int)..] $ inst_disks
 
diff --git a/src/Ganeti/Query/Node.hs b/src/Ganeti/Query/Node.hs
index dc78785..3027fdc 100644
--- a/src/Ganeti/Query/Node.hs
+++ b/src/Ganeti/Query/Node.hs
@@ -171,8 +171,8 @@ nodeRoleDoc :: String
 nodeRoleDoc =
   "Node role; " ++
   intercalate ", "
-   (map (\role ->
-          "\"" ++ nodeRoleToRaw role ++ "\" for " ++ roleDescription role)
+   (map (\nrole ->
+          "\"" ++ nodeRoleToRaw nrole ++ "\" for " ++ roleDescription nrole)
    (reverse [minBound..maxBound]))
 
 -- | Get node powered status.
diff --git a/src/Ganeti/UDSServer.hs b/src/Ganeti/UDSServer.hs
index 31f2f6c..d1236c9 100644
--- a/src/Ganeti/UDSServer.hs
+++ b/src/Ganeti/UDSServer.hs
@@ -293,7 +293,7 @@ sendMsg s buf = withTimeout (sendTmo $ clientConfig s) 
"sending a message" $ do
   B.hPut handle bEOM
   hFlush handle
   t2 <- getCurrentTimeUSec
-  logDebug $ "sendMsg: " ++ (show ((t2 - t1) `div` 1000)) ++ "ms"
+  logDebug $ "sendMsg: " ++ show ((t2 - t1) `div` 1000) ++ "ms"
 
 -- | Given a current buffer and the handle, it will read from the
 -- network until we get a full message, and it will return that
-- 
2.8.0.rc3.226.g39d4020

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