diff --git a/ChangeLog.md b/ChangeLog.md
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+++ b/ChangeLog.md
@@ -0,0 +1,3 @@
+# Changelog for multipool-postgresql-simple
+
+## Unreleased changes
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Ian Duncan (c) 2019
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Ian Duncan nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,1 @@
+# multipool-postgresql-simple
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/multipool-postgresql-simple.cabal b/multipool-postgresql-simple.cabal
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--- /dev/null
+++ b/multipool-postgresql-simple.cabal
@@ -0,0 +1,62 @@
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.31.1.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: f2bcbf30da1024a0caf8fbeb2fd53d077c9e959a4a278b878d870e5e485bec9c
+
+name:           multipool-postgresql-simple
+version:        0.1.0.0
+description:    Please see the README on GitHub at <https://github.com/iand675/multipool-postgresql-simple#readme>
+homepage:       https://github.com/iand675/multipool-postgresql-simple#readme
+bug-reports:    https://github.com/iand675/multipool-postgresql-simple/issues
+author:         Ian Duncan
+maintainer:     ian@iankduncan.com
+copyright:      Ian Duncan
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+extra-source-files:
+    README.md
+    ChangeLog.md
+
+source-repository head
+  type: git
+  location: https://github.com/iand675/multipool-postgresql-simple
+
+library
+  exposed-modules:
+      Data.MultiPool.PostgreSQLSimple
+  other-modules:
+      Paths_multipool_postgresql_simple
+  hs-source-dirs:
+      src
+  build-depends:
+      base >=4.7 && <5
+    , mtl
+    , multipool
+    , postgresql-simple
+    , resource-pool
+    , unliftio-core
+    , unordered-containers
+  default-language: Haskell2010
+
+test-suite multipool-postgresql-simple-test
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Paths_multipool_postgresql_simple
+  hs-source-dirs:
+      test
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base >=4.7 && <5
+    , mtl
+    , multipool
+    , multipool-postgresql-simple
+    , postgresql-simple
+    , resource-pool
+    , unliftio-core
+    , unordered-containers
+  default-language: Haskell2010
diff --git a/src/Data/MultiPool/PostgreSQLSimple.hs b/src/Data/MultiPool/PostgreSQLSimple.hs
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--- /dev/null
+++ b/src/Data/MultiPool/PostgreSQLSimple.hs
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+{-# LANGUAGE AllowAmbiguousTypes #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE UndecidableInstances #-}
+{-# LANGUAGE RecordWildCards #-}
+
+module Data.MultiPool.PostgreSQLSimple
+    ( MultiPoolBackend(..)
+    ) where
+
+import Control.Exception
+import Control.Monad.IO.Unlift
+import Control.Monad.Reader
+import Data.Pool
+import Data.MultiPool
+import Data.HashMap.Strict (HashMap)
+import qualified Data.HashMap.Strict as HM
+import Database.PostgreSQL.Simple
+
+withResource' :: MonadUnliftIO m => Pool a -> (a -> m b) -> m b
+withResource' pool action =
+  withRunInIO $ \io ->
+    liftIO $ withResource pool $ \a ->
+      io $ action a
+
+instance MonadUnliftIO m => MultiPoolBackend m Connection where
+  type MasterConnection Connection = Connection
+  type ReplicaConnection Connection = Connection
+  type ReplicaIdentifier Connection = InstanceName Connection
+
+  runWriteAny b m = runWrite b () m
+  runWrite b () m = withResource' (multiPoolMaster b) $ runReaderT m
+
+  runReadMaster b () m = runReadAnyMaster b m
+  runReadAnyMaster b m = withResource' (multiPoolMaster b) $ runReaderT m
+  runReadAny b m = do
+    mident <- liftIO $ multiPoolAnyReplicaSelector b b
+    case mident of
+      Nothing -> runReadAnyMaster b m
+      Just ident -> runRead b ident m
+  runRead b ident m = case HM.lookup ident (multiPoolReplica b) of
+    Nothing -> throw (InstanceDoesNotExist ident)
+    Just repl -> withResource' repl $ runReaderT m
diff --git a/test/Spec.hs b/test/Spec.hs
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--- /dev/null
+++ b/test/Spec.hs
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+main :: IO ()
+main = putStrLn "Test suite not yet implemented"