diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2014, Danny Navarro
+
+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 Danny Navarro 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/Pipes/Lift/EitherRT.hs b/Pipes/Lift/EitherRT.hs
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--- /dev/null
+++ b/Pipes/Lift/EitherRT.hs
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+{-# OPTIONS_GHC -fno-warn-orphans #-}
+module Pipes.Lift.EitherRT where
+
+import Control.Monad ((>=>))
+import Pipes (Proxy, MFunctor, lift, hoist)
+import Pipes.Lift (distribute)
+import Pipes.Internal (unsafeHoist)
+import Control.Error
+  ( EitherT(..)
+  , EitherRT(..)
+  , runEitherT
+  , runEitherRT
+  , flipET
+  , flipE
+  )
+import Pipes.Lift.EitherT
+
+instance MFunctor (EitherRT r) where
+    hoist nat m = EitherRT (hoist nat (runEitherRT m))
+
+-- | Turn 'EitherT' in the base monad into 'EitherRT'
+eitherRP :: Monad m
+         => Proxy a' a b' b (EitherT e m) r
+         -> Proxy a' a b' b (EitherRT r m) e
+eitherRP = unsafeHoist lift . runEitherP
+       >=> lift . EitherRT . EitherT . return
+{-# INLINABLE eitherRP #-}
+
+-- | Turn 'EitherRT' in the base monad into 'EitherT'
+runEitherRP :: Monad m
+            => Proxy a' a b' b (EitherRT r m) e
+            -> Proxy a' a b' b (EitherT e m) r
+runEitherRP = unsafeHoist lift . runEitherT . flipET . runEitherRT . distribute
+          >=> lift . EitherT . return . flipE
+{-# INLINABLE runEitherRP #-}
diff --git a/Pipes/Lift/EitherT.hs b/Pipes/Lift/EitherT.hs
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--- /dev/null
+++ b/Pipes/Lift/EitherT.hs
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+{-# OPTIONS_GHC -fno-warn-orphans #-}
+module Pipes.Lift.EitherT where
+
+import Control.Monad ((>=>))
+import Pipes (Proxy, MFunctor, hoist, lift)
+import Pipes.Lift (distribute)
+import Pipes.Internal (unsafeHoist)
+import Control.Error (EitherT(..), runEitherT)
+
+instance MFunctor (EitherT e) where
+    hoist nat m = EitherT (nat (runEitherT m))
+
+-- | Wrap the base monad in 'EitherT'
+eitherP :: Monad m
+        => Proxy a' a b' b m (Either e r)
+        -> Proxy a' a b' b (EitherT e m) r
+eitherP = unsafeHoist lift >=> lift . EitherT . return
+{-# INLINABLE eitherP #-}
+
+-- | Run 'EitherT' in the base monad
+runEitherP :: Monad m
+           => Proxy a' a b' b (EitherT e m) r
+           -> Proxy a' a b' b m (Either e r)
+runEitherP = runEitherT . distribute
+{-# INLINABLE runEitherP #-}
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/pipes-errors.cabal b/pipes-errors.cabal
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--- /dev/null
+++ b/pipes-errors.cabal
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+name:                pipes-errors
+version:             0.1
+cabal-version:       >=1.10
+build-type:          Simple
+license:             BSD3
+license-file:        LICENSE
+author:              Danny Navarro
+maintainer:          j@dannynavarro.net
+homepage:            https://github.com/jdnavarro/pipes-errors
+bug-reports:         https://github.com/jdnavarro/pipes-errors/issues
+category:            Control, Monad, Pipes, Error Handling
+synopsis:            Integration between pipes and errors
+description:
+  This package provides orphan `MFunctor` instances for `EitherT` and
+  `EitherRT`, in addition to functions for base monad manipulation in the
+  presence of `Proxy` monad transformers.
+
+source-repository head
+  type: git
+  location: https://github.com/jdnavarro/pipes-errors
+
+library
+  exposed-modules:     Pipes.Lift.EitherT
+                       Pipes.Lift.EitherRT
+  build-depends:       base >=4.6 && <4.8,
+                       errors >=1.3,
+                       pipes >=4.0
+  default-language:    Haskell2010
+  ghc-options:         -O2 -Wall