File 0002-Fix-warnings-for-persistent-2.6.patch of Package ghc-esqueleto

From f19f5f1ec7feda7925880754511e316beab97979 Mon Sep 17 00:00:00 2001
From: Echo Nolan <echo@echonolan.net>
Date: Fri, 2 Sep 2016 11:53:24 -0700
Subject: [PATCH 2/2] Fix warnings for persistent-2.6

---
 esqueleto.cabal                             | 2 ++
 src/Database/Esqueleto.hs                   | 2 +-
 src/Database/Esqueleto/Internal/Language.hs | 2 +-
 src/Database/Esqueleto/Internal/Sql.hs      | 6 +++---
 test/Test.hs                                | 2 +-
 5 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/esqueleto.cabal b/esqueleto.cabal
index dc75dfd..24796d0 100644
--- a/esqueleto.cabal
+++ b/esqueleto.cabal
@@ -77,6 +77,8 @@ library
     , resourcet            >= 1.1
     , blaze-html
   hs-source-dirs: src/
+  if impl(ghc >= 8.0.1)
+     ghc-options: -Wall -Wno-redundant-constraints
   ghc-options: -Wall
 
 test-suite test
diff --git a/src/Database/Esqueleto.hs b/src/Database/Esqueleto.hs
index d9ab78a..3744af9 100644
--- a/src/Database/Esqueleto.hs
+++ b/src/Database/Esqueleto.hs
@@ -405,7 +405,7 @@ import qualified Database.Persist
 
 -- | @valkey i = 'val' . 'toSqlKey'@
 -- (<https://github.com/prowdsponsor/esqueleto/issues/9>).
-valkey :: (Esqueleto query expr backend, ToBackendKey SqlBackend entity, PersistField (Key entity)) =>
+valkey :: (Esqueleto query expr backend, ToBackendKey SqlBackend entity) =>
           Int64 -> expr (Value (Key entity))
 valkey = val . toSqlKey
 
diff --git a/src/Database/Esqueleto/Internal/Language.hs b/src/Database/Esqueleto/Internal/Language.hs
index fbe88e2..60a6bd8 100644
--- a/src/Database/Esqueleto/Internal/Language.hs
+++ b/src/Database/Esqueleto/Internal/Language.hs
@@ -299,7 +299,7 @@ class (Functor query, Applicative query, Monad query) =>
   sub_selectDistinct :: PersistField a => query (expr (Value a)) -> expr (Value a)
 
   -- | Project a field of an entity.
-  (^.) :: (PersistEntity val, PersistField typ) =>
+  (^.) :: (PersistEntity val) =>
           expr (Entity val) -> EntityField val typ -> expr (Value typ)
 
   -- | Project a field of an entity that may be null.
diff --git a/src/Database/Esqueleto/Internal/Sql.hs b/src/Database/Esqueleto/Internal/Sql.hs
index 32db5d9..b070b81 100644
--- a/src/Database/Esqueleto/Internal/Sql.hs
+++ b/src/Database/Esqueleto/Internal/Sql.hs
@@ -421,7 +421,7 @@ instance Esqueleto SqlQuery SqlExpr SqlBackend where
   sub_select         = sub SELECT
   sub_selectDistinct = sub_select . distinct
 
-  (^.) :: forall val typ. (PersistEntity val, PersistField typ)
+  (^.) :: forall val typ. (PersistEntity val)
        => SqlExpr (Entity val) -> EntityField val typ -> SqlExpr (Value typ)
   EEntity ident ^. field
     | isComposite = ECompositeKey $ \info ->  dot info <$> compositeFields pdef
@@ -530,12 +530,12 @@ instance Esqueleto SqlQuery SqlExpr SqlBackend where
 instance ToSomeValues SqlExpr (SqlExpr (Value a)) where
   toSomeValues a = [SomeValue a]
 
-fieldName :: (PersistEntity val, PersistField typ)
+fieldName :: (PersistEntity val)
           => IdentInfo -> EntityField val typ -> TLB.Builder
 fieldName info = fromDBName info . fieldDB . persistFieldDef
 
 -- FIXME: Composite/non-id pKS not supported on set
-setAux :: (PersistEntity val, PersistField typ)
+setAux :: (PersistEntity val)
        => EntityField val typ
        -> (SqlExpr (Entity val) -> SqlExpr (Value typ))
        -> SqlExpr (Update val)
diff --git a/test/Test.hs b/test/Test.hs
index 48650b3..9d82ad5 100644
--- a/test/Test.hs
+++ b/test/Test.hs
@@ -1460,7 +1460,7 @@ withConn :: RunDbMonad m => (SqlBackend -> R.ResourceT m a) -> m a
 withConn =
   R.runResourceT .
 #if defined(WITH_POSTGRESQL)
-  withPostgresqlConn "host=localhost port=5432 user=test dbname=test"
+  withPostgresqlConn "host=localhost port=5432 user=test password=test dbname=test"
 #elif defined (WITH_MYSQL)
   withMySQLConn defaultConnectInfo
     { connectHost     = "localhost"
-- 
2.10.0